26 files changed, 260 insertions, 221 deletions

diff --git a/src/dummywallet.cpp b/src/dummywallet.cpp
index a5582e3b2c..0f7848bae1 100644
--- a/src/dummywallet.cpp
+++ b/src/dummywallet.cpp
@@ -8,6 +8,7 @@
 
 class CWallet;
 enum class WalletCreationStatus;
+struct bilingual_str;
 
 namespace interfaces {
 class Chain;
@@ -72,12 +73,12 @@ std::vector<std::shared_ptr<CWallet>> GetWallets()
     throw std::logic_error("Wallet function called in non-wallet build.");
 }
 
-std::shared_ptr<CWallet> LoadWallet(interfaces::Chain& chain, const std::string& name, std::string& error, std::vector<std::string>& warnings)
+std::shared_ptr<CWallet> LoadWallet(interfaces::Chain& chain, const std::string& name, bilingual_str& error, std::vector<bilingual_str>& warnings)
 {
     throw std::logic_error("Wallet function called in non-wallet build.");
 }
 
-WalletCreationStatus CreateWallet(interfaces::Chain& chain, const SecureString& passphrase, uint64_t wallet_creation_flags, const std::string& name, std::string& error, std::vector<std::string>& warnings, std::shared_ptr<CWallet>& result)
+WalletCreationStatus CreateWallet(interfaces::Chain& chain, const SecureString& passphrase, uint64_t wallet_creation_flags, const std::string& name, bilingual_str& error, std::vector<bilingual_str>& warnings, std::shared_ptr<CWallet>& result)
 {
     throw std::logic_error("Wallet function called in non-wallet build.");
 }
diff --git a/src/interfaces/node.cpp b/src/interfaces/node.cpp
index 5ebbd61584..8564819e6a 100644
--- a/src/interfaces/node.cpp
+++ b/src/interfaces/node.cpp
@@ -43,8 +43,8 @@ class CWallet;
 fs::path GetWalletDir();
 std::vector<fs::path> ListWalletDir();
 std::vector<std::shared_ptr<CWallet>> GetWallets();
-std::shared_ptr<CWallet> LoadWallet(interfaces::Chain& chain, const std::string& name, std::string& error, std::vector<std::string>& warnings);
-WalletCreationStatus CreateWallet(interfaces::Chain& chain, const SecureString& passphrase, uint64_t wallet_creation_flags, const std::string& name, std::string& error, std::vector<std::string>& warnings, std::shared_ptr<CWallet>& result);
+std::shared_ptr<CWallet> LoadWallet(interfaces::Chain& chain, const std::string& name, bilingual_str& error, std::vector<bilingual_str>& warnings);
+WalletCreationStatus CreateWallet(interfaces::Chain& chain, const SecureString& passphrase, uint64_t wallet_creation_flags, const std::string& name, bilingual_str& error, std::vector<bilingual_str>& warnings, std::shared_ptr<CWallet>& result);
 std::unique_ptr<interfaces::Handler> HandleLoadWallet(interfaces::Node::LoadWalletFn load_wallet);
 
 namespace interfaces {
@@ -259,11 +259,11 @@ public:
         }
         return wallets;
     }
-    std::unique_ptr<Wallet> loadWallet(const std::string& name, std::string& error, std::vector<std::string>& warnings) override
+    std::unique_ptr<Wallet> loadWallet(const std::string& name, bilingual_str& error, std::vector<bilingual_str>& warnings) override
     {
         return MakeWallet(LoadWallet(*m_context.chain, name, error, warnings));
     }
-    std::unique_ptr<Wallet> createWallet(const SecureString& passphrase, uint64_t wallet_creation_flags, const std::string& name, std::string& error, std::vector<std::string>& warnings, WalletCreationStatus& status) override
+    std::unique_ptr<Wallet> createWallet(const SecureString& passphrase, uint64_t wallet_creation_flags, const std::string& name, bilingual_str& error, std::vector<bilingual_str>& warnings, WalletCreationStatus& status) override
     {
         std::shared_ptr<CWallet> wallet;
         status = CreateWallet(*m_context.chain, passphrase, wallet_creation_flags, name, error, warnings, wallet);
diff --git a/src/interfaces/node.h b/src/interfaces/node.h
index 53a20886cd..db9b42b293 100644
--- a/src/interfaces/node.h
+++ b/src/interfaces/node.h
@@ -27,9 +27,10 @@ class Coin;
 class RPCTimerInterface;
 class UniValue;
 class proxyType;
+enum class WalletCreationStatus;
 struct CNodeStateStats;
 struct NodeContext;
-enum class WalletCreationStatus;
+struct bilingual_str;
 
 namespace interfaces {
 class Handler;
@@ -201,10 +202,10 @@ public:
     //! Attempts to load a wallet from file or directory.
     //! The loaded wallet is also notified to handlers previously registered
     //! with handleLoadWallet.
-    virtual std::unique_ptr<Wallet> loadWallet(const std::string& name, std::string& error, std::vector<std::string>& warnings) = 0;
+    virtual std::unique_ptr<Wallet> loadWallet(const std::string& name, bilingual_str& error, std::vector<bilingual_str>& warnings) = 0;
 
     //! Create a wallet from file
-    virtual std::unique_ptr<Wallet> createWallet(const SecureString& passphrase, uint64_t wallet_creation_flags, const std::string& name, std::string& error, std::vector<std::string>& warnings, WalletCreationStatus& status) = 0;
+    virtual std::unique_ptr<Wallet> createWallet(const SecureString& passphrase, uint64_t wallet_creation_flags, const std::string& name, bilingual_str& error, std::vector<bilingual_str>& warnings, WalletCreationStatus& status) = 0;
 
     //! Register handler for init messages.
     using InitMessageFn = std::function<void(const std::string& message)>;
diff --git a/src/interfaces/wallet.cpp b/src/interfaces/wallet.cpp
index 752448aac7..13b034936b 100644
--- a/src/interfaces/wallet.cpp
+++ b/src/interfaces/wallet.cpp
@@ -219,7 +219,7 @@ public:
         bool sign,
         int& change_pos,
         CAmount& fee,
-        std::string& fail_reason) override
+        bilingual_str& fail_reason) override
     {
         LOCK(m_wallet->cs_wallet);
         CTransactionRef tx;
@@ -248,7 +248,7 @@ public:
     }
     bool createBumpTransaction(const uint256& txid,
         const CCoinControl& coin_control,
-        std::vector<std::string>& errors,
+        std::vector<bilingual_str>& errors,
         CAmount& old_fee,
         CAmount& new_fee,
         CMutableTransaction& mtx) override
@@ -258,7 +258,7 @@ public:
     bool signBumpTransaction(CMutableTransaction& mtx) override { return feebumper::SignTransaction(*m_wallet.get(), mtx); }
     bool commitBumpTransaction(const uint256& txid,
         CMutableTransaction&& mtx,
-        std::vector<std::string>& errors,
+        std::vector<bilingual_str>& errors,
         uint256& bumped_txid) override
     {
         return feebumper::CommitTransaction(*m_wallet.get(), txid, std::move(mtx), errors, bumped_txid) ==
diff --git a/src/interfaces/wallet.h b/src/interfaces/wallet.h
index e5e3b80663..f35335c69f 100644
--- a/src/interfaces/wallet.h
+++ b/src/interfaces/wallet.h
@@ -31,6 +31,7 @@ enum class TransactionError;
 enum isminetype : unsigned int;
 struct CRecipient;
 struct PartiallySignedTransaction;
+struct bilingual_str;
 typedef uint8_t isminefilter;
 
 namespace interfaces {
@@ -136,7 +137,7 @@ public:
         bool sign,
         int& change_pos,
         CAmount& fee,
-        std::string& fail_reason) = 0;
+        bilingual_str& fail_reason) = 0;
 
     //! Commit transaction.
     virtual void commitTransaction(CTransactionRef tx,
@@ -155,7 +156,7 @@ public:
     //! Create bump transaction.
     virtual bool createBumpTransaction(const uint256& txid,
         const CCoinControl& coin_control,
-        std::vector<std::string>& errors,
+        std::vector<bilingual_str>& errors,
         CAmount& old_fee,
         CAmount& new_fee,
         CMutableTransaction& mtx) = 0;
@@ -166,7 +167,7 @@ public:
     //! Commit bump transaction.
     virtual bool commitBumpTransaction(const uint256& txid,
         CMutableTransaction&& mtx,
-        std::vector<std::string>& errors,
+        std::vector<bilingual_str>& errors,
         uint256& bumped_txid) = 0;
 
     //! Get a transaction.
diff --git a/src/qt/walletcontroller.cpp b/src/qt/walletcontroller.cpp
index 9c1488fb0e..7cde3ca30b 100644
--- a/src/qt/walletcontroller.cpp
+++ b/src/qt/walletcontroller.cpp
@@ -14,6 +14,7 @@
 #include <interfaces/handler.h>
 #include <interfaces/node.h>
 #include <util/string.h>
+#include <util/translation.h>
 #include <wallet/wallet.h>
 
 #include <algorithm>
@@ -244,10 +245,10 @@ void CreateWalletActivity::finish()
 {
     destroyProgressDialog();
 
-    if (!m_error_message.empty()) {
-        QMessageBox::critical(m_parent_widget, tr("Create wallet failed"), QString::fromStdString(m_error_message));
+    if (!m_error_message.original.empty()) {
+        QMessageBox::critical(m_parent_widget, tr("Create wallet failed"), QString::fromStdString(m_error_message.translated));
     } else if (!m_warning_message.empty()) {
-        QMessageBox::warning(m_parent_widget, tr("Create wallet warning"), QString::fromStdString(Join(m_warning_message, "\n")));
+        QMessageBox::warning(m_parent_widget, tr("Create wallet warning"), QString::fromStdString(Join(m_warning_message, "\n", OpTranslated)));
     }
 
     if (m_wallet_model) Q_EMIT created(m_wallet_model);
@@ -285,10 +286,10 @@ void OpenWalletActivity::finish()
 {
     destroyProgressDialog();
 
-    if (!m_error_message.empty()) {
-        QMessageBox::critical(m_parent_widget, tr("Open wallet failed"), QString::fromStdString(m_error_message));
+    if (!m_error_message.original.empty()) {
+        QMessageBox::critical(m_parent_widget, tr("Open wallet failed"), QString::fromStdString(m_error_message.translated));
     } else if (!m_warning_message.empty()) {
-        QMessageBox::warning(m_parent_widget, tr("Open wallet warning"), QString::fromStdString(Join(m_warning_message, "\n")));
+        QMessageBox::warning(m_parent_widget, tr("Open wallet warning"), QString::fromStdString(Join(m_warning_message, "\n", OpTranslated)));
     }
 
     if (m_wallet_model) Q_EMIT opened(m_wallet_model);
diff --git a/src/qt/walletcontroller.h b/src/qt/walletcontroller.h
index 3808b7d8bf..24dd83adf7 100644
--- a/src/qt/walletcontroller.h
+++ b/src/qt/walletcontroller.h
@@ -8,6 +8,7 @@
 #include <qt/sendcoinsrecipient.h>
 #include <support/allocators/secure.h>
 #include <sync.h>
+#include <util/translation.h>
 
 #include <map>
 #include <memory>
@@ -104,8 +105,8 @@ protected:
     QWidget* const m_parent_widget;
     QProgressDialog* m_progress_dialog{nullptr};
     WalletModel* m_wallet_model{nullptr};
-    std::string m_error_message;
-    std::vector<std::string> m_warning_message;
+    bilingual_str m_error_message;
+    std::vector<bilingual_str> m_warning_message;
 };
 
 
diff --git a/src/qt/walletmodel.cpp b/src/qt/walletmodel.cpp
index e7581cd64e..70ee7f4917 100644
--- a/src/qt/walletmodel.cpp
+++ b/src/qt/walletmodel.cpp
@@ -24,6 +24,7 @@
 #include <psbt.h>
 #include <ui_interface.h>
 #include <util/system.h> // for GetBoolArg
+#include <util/translation.h>
 #include <wallet/coincontrol.h>
 #include <wallet/wallet.h> // for CRecipient
 
@@ -185,10 +186,10 @@ WalletModel::SendCoinsReturn WalletModel::prepareTransaction(WalletModelTransact
     {
         CAmount nFeeRequired = 0;
         int nChangePosRet = -1;
-        std::string strFailReason;
+        bilingual_str error;
 
         auto& newTx = transaction.getWtx();
-        newTx = m_wallet->createTransaction(vecSend, coinControl, !wallet().privateKeysDisabled() /* sign */, nChangePosRet, nFeeRequired, strFailReason);
+        newTx = m_wallet->createTransaction(vecSend, coinControl, !wallet().privateKeysDisabled() /* sign */, nChangePosRet, nFeeRequired, error);
         transaction.setTransactionFee(nFeeRequired);
         if (fSubtractFeeFromAmount && newTx)
             transaction.reassignAmounts(nChangePosRet);
@@ -199,8 +200,8 @@ WalletModel::SendCoinsReturn WalletModel::prepareTransaction(WalletModelTransact
             {
                 return SendCoinsReturn(AmountWithFeeExceedsBalance);
             }
-            Q_EMIT message(tr("Send Coins"), QString::fromStdString(strFailReason),
-                         CClientUIInterface::MSG_ERROR);
+            Q_EMIT message(tr("Send Coins"), QString::fromStdString(error.translated),
+                CClientUIInterface::MSG_ERROR);
             return TransactionCreationFailed;
         }
 
@@ -482,14 +483,14 @@ bool WalletModel::bumpFee(uint256 hash, uint256& new_hash)
 {
     CCoinControl coin_control;
     coin_control.m_signal_bip125_rbf = true;
-    std::vector<std::string> errors;
+    std::vector<bilingual_str> errors;
     CAmount old_fee;
     CAmount new_fee;
     CMutableTransaction mtx;
     if (!m_wallet->createBumpTransaction(hash, coin_control, errors, old_fee, new_fee, mtx)) {
         QMessageBox::critical(nullptr, tr("Fee bump error"), tr("Increasing transaction fee failed") + "<br />(" +
-            (errors.size() ? QString::fromStdString(errors[0]) : "") +")");
-         return false;
+            (errors.size() ? QString::fromStdString(errors[0].translated) : "") +")");
+        return false;
     }
 
     const bool create_psbt = m_wallet->privateKeysDisabled();
@@ -551,8 +552,8 @@ bool WalletModel::bumpFee(uint256 hash, uint256& new_hash)
     // commit the bumped transaction
     if(!m_wallet->commitBumpTransaction(hash, std::move(mtx), errors, new_hash)) {
         QMessageBox::critical(nullptr, tr("Fee bump error"), tr("Could not commit transaction") + "<br />(" +
-            QString::fromStdString(errors[0])+")");
-         return false;
+            QString::fromStdString(errors[0].translated)+")");
+        return false;
     }
     return true;
 }
diff --git a/src/util/translation.h b/src/util/translation.h
index fc45da440a..b2d964c977 100644
--- a/src/util/translation.h
+++ b/src/util/translation.h
@@ -18,6 +18,20 @@ struct bilingual_str {
     std::string translated;
 };
 
+inline bilingual_str operator+(const bilingual_str& lhs, const bilingual_str& rhs)
+{
+    return bilingual_str{
+        lhs.original + rhs.original,
+        lhs.translated + rhs.translated};
+}
+
+/** Mark a bilingual_str as untranslated */
+inline static bilingual_str Untranslated(std::string original) { return {original, original}; }
+/** Unary operator to return the original */
+inline static std::string OpOriginal(const bilingual_str& b) { return b.original; }
+/** Unary operator to return the translation */
+inline static std::string OpTranslated(const bilingual_str& b) { return b.translated; }
+
 namespace tinyformat {
 template <typename... Args>
 bilingual_str format(const bilingual_str& fmt, const Args&... args)
diff --git a/src/wallet/db.cpp b/src/wallet/db.cpp
index 67be4d85d2..3f7c2d09cc 100644
--- a/src/wallet/db.cpp
+++ b/src/wallet/db.cpp
@@ -393,7 +393,7 @@ bool BerkeleyBatch::Recover(const fs::path& file_path, void *callbackDataIn, boo
     return fSuccess;
 }
 
-bool BerkeleyBatch::VerifyEnvironment(const fs::path& file_path, std::string& errorStr)
+bool BerkeleyBatch::VerifyEnvironment(const fs::path& file_path, bilingual_str& errorStr)
 {
     std::string walletFile;
     std::shared_ptr<BerkeleyEnvironment> env = GetWalletEnv(file_path, walletFile);
@@ -403,14 +403,14 @@ bool BerkeleyBatch::VerifyEnvironment(const fs::path& file_path, std::string& er
     LogPrintf("Using wallet %s\n", file_path.string());
 
     if (!env->Open(true /* retry */)) {
-        errorStr = strprintf(_("Error initializing wallet database environment %s!").translated, walletDir);
+        errorStr = strprintf(_("Error initializing wallet database environment %s!"), walletDir);
         return false;
     }
 
     return true;
 }
 
-bool BerkeleyBatch::VerifyDatabaseFile(const fs::path& file_path, std::vector<std::string>& warnings, std::string& errorStr, BerkeleyEnvironment::recoverFunc_type recoverFunc)
+bool BerkeleyBatch::VerifyDatabaseFile(const fs::path& file_path, std::vector<bilingual_str>& warnings, bilingual_str& errorStr, BerkeleyEnvironment::recoverFunc_type recoverFunc)
 {
     std::string walletFile;
     std::shared_ptr<BerkeleyEnvironment> env = GetWalletEnv(file_path, walletFile);
@@ -425,12 +425,12 @@ bool BerkeleyBatch::VerifyDatabaseFile(const fs::path& file_path, std::vector<st
             warnings.push_back(strprintf(_("Warning: Wallet file corrupt, data salvaged!"
                                      " Original %s saved as %s in %s; if"
                                      " your balance or transactions are incorrect you should"
-                                     " restore from a backup.").translated,
+                                     " restore from a backup."),
                 walletFile, backup_filename, walletDir));
         }
         if (r == BerkeleyEnvironment::VerifyResult::RECOVER_FAIL)
         {
-            errorStr = strprintf(_("%s corrupt, salvage failed").translated, walletFile);
+            errorStr = strprintf(_("%s corrupt, salvage failed"), walletFile);
             return false;
         }
     }
diff --git a/src/wallet/db.h b/src/wallet/db.h
index 1c5f42abca..1bf3375475 100644
--- a/src/wallet/db.h
+++ b/src/wallet/db.h
@@ -21,6 +21,8 @@
 
 #include <db_cxx.h>
 
+struct bilingual_str;
+
 static const unsigned int DEFAULT_WALLET_DBLOGSIZE = 100;
 static const bool DEFAULT_WALLET_PRIVDB = true;
 
@@ -242,9 +244,9 @@ public:
        ideal to be called periodically */
     static bool PeriodicFlush(BerkeleyDatabase& database);
     /* verifies the database environment */
-    static bool VerifyEnvironment(const fs::path& file_path, std::string& errorStr);
+    static bool VerifyEnvironment(const fs::path& file_path, bilingual_str& errorStr);
     /* verifies the database file */
-    static bool VerifyDatabaseFile(const fs::path& file_path, std::vector<std::string>& warnings, std::string& errorStr, BerkeleyEnvironment::recoverFunc_type recoverFunc);
+    static bool VerifyDatabaseFile(const fs::path& file_path, std::vector<bilingual_str>& warnings, bilingual_str& errorStr, BerkeleyEnvironment::recoverFunc_type recoverFunc);
 
     template <typename K, typename T>
     bool Read(const K& key, T& value)
diff --git a/src/wallet/feebumper.cpp b/src/wallet/feebumper.cpp
index 01fcb1680e..cacf306891 100644
--- a/src/wallet/feebumper.cpp
+++ b/src/wallet/feebumper.cpp
@@ -3,44 +3,45 @@
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #include <interfaces/chain.h>
-#include <wallet/coincontrol.h>
-#include <wallet/feebumper.h>
-#include <wallet/fees.h>
-#include <wallet/wallet.h>
 #include <policy/fees.h>
 #include <policy/policy.h>
 #include <util/moneystr.h>
 #include <util/rbf.h>
 #include <util/system.h>
+#include <util/translation.h>
+#include <wallet/coincontrol.h>
+#include <wallet/feebumper.h>
+#include <wallet/fees.h>
+#include <wallet/wallet.h>
 
 //! Check whether transaction has descendant in wallet or mempool, or has been
 //! mined, or conflicts with a mined transaction. Return a feebumper::Result.
-static feebumper::Result PreconditionChecks(const CWallet& wallet, const CWalletTx& wtx, std::vector<std::string>& errors) EXCLUSIVE_LOCKS_REQUIRED(wallet.cs_wallet)
+static feebumper::Result PreconditionChecks(const CWallet& wallet, const CWalletTx& wtx, std::vector<bilingual_str>& errors) EXCLUSIVE_LOCKS_REQUIRED(wallet.cs_wallet)
 {
     if (wallet.HasWalletSpend(wtx.GetHash())) {
-        errors.push_back("Transaction has descendants in the wallet");
+        errors.push_back(Untranslated("Transaction has descendants in the wallet"));
         return feebumper::Result::INVALID_PARAMETER;
     }
 
     {
         if (wallet.chain().hasDescendantsInMempool(wtx.GetHash())) {
-            errors.push_back("Transaction has descendants in the mempool");
+            errors.push_back(Untranslated("Transaction has descendants in the mempool"));
             return feebumper::Result::INVALID_PARAMETER;
         }
     }
 
     if (wtx.GetDepthInMainChain() != 0) {
-        errors.push_back("Transaction has been mined, or is conflicted with a mined transaction");
+        errors.push_back(Untranslated("Transaction has been mined, or is conflicted with a mined transaction"));
         return feebumper::Result::WALLET_ERROR;
     }
 
     if (!SignalsOptInRBF(*wtx.tx)) {
-        errors.push_back("Transaction is not BIP 125 replaceable");
+        errors.push_back(Untranslated("Transaction is not BIP 125 replaceable"));
         return feebumper::Result::WALLET_ERROR;
     }
 
     if (wtx.mapValue.count("replaced_by_txid")) {
-        errors.push_back(strprintf("Cannot bump transaction %s which was already bumped by transaction %s", wtx.GetHash().ToString(), wtx.mapValue.at("replaced_by_txid")));
+        errors.push_back(strprintf(Untranslated("Cannot bump transaction %s which was already bumped by transaction %s"), wtx.GetHash().ToString(), wtx.mapValue.at("replaced_by_txid")));
         return feebumper::Result::WALLET_ERROR;
     }
 
@@ -48,7 +49,7 @@ static feebumper::Result PreconditionChecks(const CWallet& wallet, const CWallet
     // if not, we can't bump the fee, because the wallet has no way of knowing the value of the other inputs (thus the fee)
     isminefilter filter = wallet.GetLegacyScriptPubKeyMan() && wallet.IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS) ? ISMINE_WATCH_ONLY : ISMINE_SPENDABLE;
     if (!wallet.IsAllFromMe(*wtx.tx, filter)) {
-        errors.push_back("Transaction contains inputs that don't belong to this wallet");
+        errors.push_back(Untranslated("Transaction contains inputs that don't belong to this wallet"));
         return feebumper::Result::WALLET_ERROR;
     }
 
@@ -57,7 +58,8 @@ static feebumper::Result PreconditionChecks(const CWallet& wallet, const CWallet
 }
 
 //! Check if the user provided a valid feeRate
-static feebumper::Result CheckFeeRate(const CWallet& wallet, const CWalletTx& wtx, const CFeeRate& newFeerate, const int64_t maxTxSize, std::vector<std::string>& errors) {
+static feebumper::Result CheckFeeRate(const CWallet& wallet, const CWalletTx& wtx, const CFeeRate& newFeerate, const int64_t maxTxSize, std::vector<bilingual_str>& errors)
+{
     // check that fee rate is higher than mempool's minimum fee
     // (no point in bumping fee if we know that the new tx won't be accepted to the mempool)
     // This may occur if the user set fee_rate or paytxfee too low, if fallbackfee is too low, or, perhaps,
@@ -67,7 +69,7 @@ static feebumper::Result CheckFeeRate(const CWallet& wallet, const CWalletTx& wt
 
     if (newFeerate.GetFeePerK() < minMempoolFeeRate.GetFeePerK()) {
         errors.push_back(strprintf(
-            "New fee rate (%s) is lower than the minimum fee rate (%s) to get into the mempool -- ",
+            Untranslated("New fee rate (%s) is lower than the minimum fee rate (%s) to get into the mempool -- "),
             FormatMoney(newFeerate.GetFeePerK()),
             FormatMoney(minMempoolFeeRate.GetFeePerK())));
         return feebumper::Result::WALLET_ERROR;
@@ -86,14 +88,14 @@ static feebumper::Result CheckFeeRate(const CWallet& wallet, const CWalletTx& wt
     CAmount minTotalFee = nOldFeeRate.GetFee(maxTxSize) + incrementalRelayFee.GetFee(maxTxSize);
 
     if (new_total_fee < minTotalFee) {
-        errors.push_back(strprintf("Insufficient total fee %s, must be at least %s (oldFee %s + incrementalFee %s)",
+        errors.push_back(strprintf(Untranslated("Insufficient total fee %s, must be at least %s (oldFee %s + incrementalFee %s)"),
             FormatMoney(new_total_fee), FormatMoney(minTotalFee), FormatMoney(nOldFeeRate.GetFee(maxTxSize)), FormatMoney(incrementalRelayFee.GetFee(maxTxSize))));
         return feebumper::Result::INVALID_PARAMETER;
     }
 
     CAmount requiredFee = GetRequiredFee(wallet, maxTxSize);
     if (new_total_fee < requiredFee) {
-        errors.push_back(strprintf("Insufficient total fee (cannot be less than required fee %s)",
+        errors.push_back(strprintf(Untranslated("Insufficient total fee (cannot be less than required fee %s)"),
             FormatMoney(requiredFee)));
         return feebumper::Result::INVALID_PARAMETER;
     }
@@ -101,8 +103,8 @@ static feebumper::Result CheckFeeRate(const CWallet& wallet, const CWalletTx& wt
     // Check that in all cases the new fee doesn't violate maxTxFee
     const CAmount max_tx_fee = wallet.m_default_max_tx_fee;
     if (new_total_fee > max_tx_fee) {
-        errors.push_back(strprintf("Specified or calculated fee %s is too high (cannot be higher than -maxtxfee %s)",
-                            FormatMoney(new_total_fee), FormatMoney(max_tx_fee)));
+        errors.push_back(strprintf(Untranslated("Specified or calculated fee %s is too high (cannot be higher than -maxtxfee %s)"),
+            FormatMoney(new_total_fee), FormatMoney(max_tx_fee)));
         return feebumper::Result::WALLET_ERROR;
     }
 
@@ -144,12 +146,12 @@ bool TransactionCanBeBumped(const CWallet& wallet, const uint256& txid)
     const CWalletTx* wtx = wallet.GetWalletTx(txid);
     if (wtx == nullptr) return false;
 
-    std::vector<std::string> errors_dummy;
+    std::vector<bilingual_str> errors_dummy;
     feebumper::Result res = PreconditionChecks(wallet, *wtx, errors_dummy);
     return res == feebumper::Result::OK;
 }
 
-Result CreateRateBumpTransaction(CWallet& wallet, const uint256& txid, const CCoinControl& coin_control, std::vector<std::string>& errors,
+Result CreateRateBumpTransaction(CWallet& wallet, const uint256& txid, const CCoinControl& coin_control, std::vector<bilingual_str>& errors,
                                  CAmount& old_fee, CAmount& new_fee, CMutableTransaction& mtx)
 {
     // We are going to modify coin control later, copy to re-use
@@ -159,7 +161,7 @@ Result CreateRateBumpTransaction(CWallet& wallet, const uint256& txid, const CCo
     errors.clear();
     auto it = wallet.mapWallet.find(txid);
     if (it == wallet.mapWallet.end()) {
-        errors.push_back("Invalid or non-wallet transaction id");
+        errors.push_back(Untranslated("Invalid or non-wallet transaction id"));
         return Result::INVALID_ADDRESS_OR_KEY;
     }
     const CWalletTx& wtx = it->second;
@@ -216,9 +218,9 @@ Result CreateRateBumpTransaction(CWallet& wallet, const uint256& txid, const CCo
     CTransactionRef tx_new = MakeTransactionRef();
     CAmount fee_ret;
     int change_pos_in_out = -1; // No requested location for change
-    std::string fail_reason;
+    bilingual_str fail_reason;
     if (!wallet.CreateTransaction(recipients, tx_new, fee_ret, change_pos_in_out, fail_reason, new_coin_control, false)) {
-        errors.push_back("Unable to create transaction: " + fail_reason);
+        errors.push_back(Untranslated("Unable to create transaction.") + Untranslated(" ") + fail_reason);
         return Result::WALLET_ERROR;
     }
 
@@ -242,7 +244,7 @@ bool SignTransaction(CWallet& wallet, CMutableTransaction& mtx) {
     return wallet.SignTransaction(mtx);
 }
 
-Result CommitTransaction(CWallet& wallet, const uint256& txid, CMutableTransaction&& mtx, std::vector<std::string>& errors, uint256& bumped_txid)
+Result CommitTransaction(CWallet& wallet, const uint256& txid, CMutableTransaction&& mtx, std::vector<bilingual_str>& errors, uint256& bumped_txid)
 {
     LOCK(wallet.cs_wallet);
     if (!errors.empty()) {
@@ -250,7 +252,7 @@ Result CommitTransaction(CWallet& wallet, const uint256& txid, CMutableTransacti
     }
     auto it = txid.IsNull() ? wallet.mapWallet.end() : wallet.mapWallet.find(txid);
     if (it == wallet.mapWallet.end()) {
-        errors.push_back("Invalid or non-wallet transaction id");
+        errors.push_back(Untranslated("Invalid or non-wallet transaction id"));
         return Result::MISC_ERROR;
     }
     CWalletTx& oldWtx = it->second;
@@ -275,7 +277,7 @@ Result CommitTransaction(CWallet& wallet, const uint256& txid, CMutableTransacti
         // along with an exception. It would be good to return information about
         // wtxBumped to the caller even if marking the original transaction
         // replaced does not succeed for some reason.
-        errors.push_back("Created new bumpfee transaction but could not mark the original transaction as replaced");
+        errors.push_back(Untranslated("Created new bumpfee transaction but could not mark the original transaction as replaced"));
     }
     return Result::OK;
 }
diff --git a/src/wallet/feebumper.h b/src/wallet/feebumper.h
index fc038ae731..50577c9d3e 100644
--- a/src/wallet/feebumper.h
+++ b/src/wallet/feebumper.h
@@ -12,6 +12,7 @@ class CWalletTx;
 class uint256;
 class CCoinControl;
 enum class FeeEstimateMode;
+struct bilingual_str;
 
 namespace feebumper {
 
@@ -30,12 +31,12 @@ bool TransactionCanBeBumped(const CWallet& wallet, const uint256& txid);
 
 //! Create bumpfee transaction based on feerate estimates.
 Result CreateRateBumpTransaction(CWallet& wallet,
-                         const uint256& txid,
-                         const CCoinControl& coin_control,
-                         std::vector<std::string>& errors,
-                         CAmount& old_fee,
-                         CAmount& new_fee,
-                         CMutableTransaction& mtx);
+    const uint256& txid,
+    const CCoinControl& coin_control,
+    std::vector<bilingual_str>& errors,
+    CAmount& old_fee,
+    CAmount& new_fee,
+    CMutableTransaction& mtx);
 
 //! Sign the new transaction,
 //! @return false if the tx couldn't be found or if it was
@@ -47,10 +48,10 @@ bool SignTransaction(CWallet& wallet, CMutableTransaction& mtx);
 //! but sets errors if the tx could not be added to the mempool (will try later)
 //! or if the old transaction could not be marked as replaced.
 Result CommitTransaction(CWallet& wallet,
-                         const uint256& txid,
-                         CMutableTransaction&& mtx,
-                         std::vector<std::string>& errors,
-                         uint256& bumped_txid);
+    const uint256& txid,
+    CMutableTransaction&& mtx,
+    std::vector<bilingual_str>& errors,
+    uint256& bumped_txid);
 
 } // namespace feebumper
 
diff --git a/src/wallet/load.cpp b/src/wallet/load.cpp
index 0afd2dfcf0..217a950457 100644
--- a/src/wallet/load.cpp
+++ b/src/wallet/load.cpp
@@ -53,12 +53,14 @@ bool VerifyWallets(interfaces::Chain& chain, const std::vector<std::string>& wal
             return false;
         }
 
-        std::string error_string;
-        std::vector<std::string> warnings;
+        bilingual_str error_string;
+        std::vector<bilingual_str> warnings;
         bool verify_success = CWallet::Verify(chain, location, salvage_wallet, error_string, warnings);
-        if (!error_string.empty()) chain.initError(error_string);
-        if (!warnings.empty()) chain.initWarning(Join(warnings, "\n"));
-        if (!verify_success) return false;
+        if (!warnings.empty()) chain.initWarning(Join(warnings, "\n", OpTranslated));
+        if (!verify_success) {
+            chain.initError(error_string.translated);
+            return false;
+        }
     }
 
     return true;
@@ -68,12 +70,12 @@ bool LoadWallets(interfaces::Chain& chain, const std::vector<std::string>& walle
 {
     try {
         for (const std::string& walletFile : wallet_files) {
-            std::string error;
-            std::vector<std::string> warnings;
+            bilingual_str error;
+            std::vector<bilingual_str> warnings;
             std::shared_ptr<CWallet> pwallet = CWallet::CreateWalletFromFile(chain, WalletLocation(walletFile), error, warnings);
-            if (!warnings.empty()) chain.initWarning(Join(warnings, "\n"));
+            if (!warnings.empty()) chain.initWarning(Join(warnings, "\n", OpTranslated));
             if (!pwallet) {
-                chain.initError(error);
+                chain.initError(error.translated);
                 return false;
             }
             AddWallet(pwallet);
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index 91162d575d..e666d55e11 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -23,6 +23,7 @@
 #include <util/moneystr.h>
 #include <util/string.h>
 #include <util/system.h>
+#include <util/translation.h>
 #include <util/url.h>
 #include <util/vector.h>
 #include <wallet/coincontrol.h>
@@ -338,16 +339,16 @@ static CTransactionRef SendMoney(CWallet* const pwallet, const CTxDestination& a
 
     // Create and send the transaction
     CAmount nFeeRequired = 0;
-    std::string strError;
+    bilingual_str error;
     std::vector<CRecipient> vecSend;
     int nChangePosRet = -1;
     CRecipient recipient = {scriptPubKey, nValue, fSubtractFeeFromAmount};
     vecSend.push_back(recipient);
     CTransactionRef tx;
-    if (!pwallet->CreateTransaction(vecSend, tx, nFeeRequired, nChangePosRet, strError, coin_control)) {
+    if (!pwallet->CreateTransaction(vecSend, tx, nFeeRequired, nChangePosRet, error, coin_control)) {
         if (!fSubtractFeeFromAmount && nValue + nFeeRequired > curBalance)
-            strError = strprintf("Error: This transaction requires a transaction fee of at least %s", FormatMoney(nFeeRequired));
-        throw JSONRPCError(RPC_WALLET_ERROR, strError);
+            error = strprintf(Untranslated("Error: This transaction requires a transaction fee of at least %s"), FormatMoney(nFeeRequired));
+        throw JSONRPCError(RPC_WALLET_ERROR, error.original);
     }
     pwallet->CommitTransaction(tx, std::move(mapValue), {} /* orderForm */);
     return tx;
@@ -903,11 +904,11 @@ static UniValue sendmany(const JSONRPCRequest& request)
     // Send
     CAmount nFeeRequired = 0;
     int nChangePosRet = -1;
-    std::string strFailReason;
+    bilingual_str error;
     CTransactionRef tx;
-    bool fCreated = pwallet->CreateTransaction(vecSend, tx, nFeeRequired, nChangePosRet, strFailReason, coin_control);
+    bool fCreated = pwallet->CreateTransaction(vecSend, tx, nFeeRequired, nChangePosRet, error, coin_control);
     if (!fCreated)
-        throw JSONRPCError(RPC_WALLET_INSUFFICIENT_FUNDS, strFailReason);
+        throw JSONRPCError(RPC_WALLET_INSUFFICIENT_FUNDS, error.original);
     pwallet->CommitTransaction(tx, std::move(mapValue), {} /* orderForm */);
     return tx->GetHash().GetHex();
 }
@@ -2589,14 +2590,14 @@ static UniValue loadwallet(const JSONRPCRequest& request)
         }
     }
 
-    std::string error;
-    std::vector<std::string> warning;
-    std::shared_ptr<CWallet> const wallet = LoadWallet(*g_rpc_chain, location, error, warning);
-    if (!wallet) throw JSONRPCError(RPC_WALLET_ERROR, error);
+    bilingual_str error;
+    std::vector<bilingual_str> warnings;
+    std::shared_ptr<CWallet> const wallet = LoadWallet(*g_rpc_chain, location, error, warnings);
+    if (!wallet) throw JSONRPCError(RPC_WALLET_ERROR, error.original);
 
     UniValue obj(UniValue::VOBJ);
     obj.pushKV("name", wallet->GetName());
-    obj.pushKV("warning", Join(warning, "\n"));
+    obj.pushKV("warning", Join(warnings, "\n", OpOriginal));
 
     return obj;
 }
@@ -2705,12 +2706,12 @@ static UniValue createwallet(const JSONRPCRequest& request)
     }
     SecureString passphrase;
     passphrase.reserve(100);
-    std::vector<std::string> warnings;
+    std::vector<bilingual_str> warnings;
     if (!request.params[3].isNull()) {
         passphrase = request.params[3].get_str().c_str();
         if (passphrase.empty()) {
             // Empty string means unencrypted
-            warnings.emplace_back("Empty string given as passphrase, wallet will not be encrypted.");
+            warnings.emplace_back(Untranslated("Empty string given as passphrase, wallet will not be encrypted."));
         }
     }
 
@@ -2721,14 +2722,14 @@ static UniValue createwallet(const JSONRPCRequest& request)
         flags |= WALLET_FLAG_DESCRIPTORS;
     }
 
-    std::string error;
+    bilingual_str error;
     std::shared_ptr<CWallet> wallet;
     WalletCreationStatus status = CreateWallet(*g_rpc_chain, passphrase, flags, request.params[0].get_str(), error, warnings, wallet);
     switch (status) {
         case WalletCreationStatus::CREATION_FAILED:
-            throw JSONRPCError(RPC_WALLET_ERROR, error);
+            throw JSONRPCError(RPC_WALLET_ERROR, error.original);
         case WalletCreationStatus::ENCRYPTION_FAILED:
-            throw JSONRPCError(RPC_WALLET_ENCRYPTION_FAILED, error);
+            throw JSONRPCError(RPC_WALLET_ENCRYPTION_FAILED, error.original);
         case WalletCreationStatus::SUCCESS:
             break;
         // no default case, so the compiler can warn about missing cases
@@ -2736,7 +2737,7 @@ static UniValue createwallet(const JSONRPCRequest& request)
 
     UniValue obj(UniValue::VOBJ);
     obj.pushKV("name", wallet->GetName());
-    obj.pushKV("warning", Join(warnings, "\n"));
+    obj.pushKV("warning", Join(warnings, "\n", OpOriginal));
 
     return obj;
 }
@@ -3108,10 +3109,10 @@ void FundTransaction(CWallet* const pwallet, CMutableTransaction& tx, CAmount& f
         setSubtractFeeFromOutputs.insert(pos);
     }
 
-    std::string strFailReason;
+    bilingual_str error;
 
-    if (!pwallet->FundTransaction(tx, fee_out, change_position, strFailReason, lockUnspents, setSubtractFeeFromOutputs, coinControl)) {
-        throw JSONRPCError(RPC_WALLET_ERROR, strFailReason);
+    if (!pwallet->FundTransaction(tx, fee_out, change_position, error, lockUnspents, setSubtractFeeFromOutputs, coinControl)) {
+        throw JSONRPCError(RPC_WALLET_ERROR, error.original);
     }
 }
 
@@ -3417,7 +3418,7 @@ static UniValue bumpfee(const JSONRPCRequest& request)
     EnsureWalletIsUnlocked(pwallet);
 
 
-    std::vector<std::string> errors;
+    std::vector<bilingual_str> errors;
     CAmount old_fee;
     CAmount new_fee;
     CMutableTransaction mtx;
@@ -3427,19 +3428,19 @@ static UniValue bumpfee(const JSONRPCRequest& request)
     if (res != feebumper::Result::OK) {
         switch(res) {
             case feebumper::Result::INVALID_ADDRESS_OR_KEY:
-                throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, errors[0]);
+                throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, errors[0].original);
                 break;
             case feebumper::Result::INVALID_REQUEST:
-                throw JSONRPCError(RPC_INVALID_REQUEST, errors[0]);
+                throw JSONRPCError(RPC_INVALID_REQUEST, errors[0].original);
                 break;
             case feebumper::Result::INVALID_PARAMETER:
-                throw JSONRPCError(RPC_INVALID_PARAMETER, errors[0]);
+                throw JSONRPCError(RPC_INVALID_PARAMETER, errors[0].original);
                 break;
             case feebumper::Result::WALLET_ERROR:
-                throw JSONRPCError(RPC_WALLET_ERROR, errors[0]);
+                throw JSONRPCError(RPC_WALLET_ERROR, errors[0].original);
                 break;
             default:
-                throw JSONRPCError(RPC_MISC_ERROR, errors[0]);
+                throw JSONRPCError(RPC_MISC_ERROR, errors[0].original);
                 break;
         }
     }
@@ -3455,7 +3456,7 @@ static UniValue bumpfee(const JSONRPCRequest& request)
 
         uint256 txid;
         if (feebumper::CommitTransaction(*pwallet, hash, std::move(mtx), errors, txid) != feebumper::Result::OK) {
-            throw JSONRPCError(RPC_WALLET_ERROR, errors[0]);
+            throw JSONRPCError(RPC_WALLET_ERROR, errors[0].original);
         }
 
         result.pushKV("txid", txid.GetHex());
@@ -3473,8 +3474,8 @@ static UniValue bumpfee(const JSONRPCRequest& request)
     result.pushKV("origfee", ValueFromAmount(old_fee));
     result.pushKV("fee", ValueFromAmount(new_fee));
     UniValue result_errors(UniValue::VARR);
-    for (const std::string& error : errors) {
-        result_errors.push_back(error);
+    for (const bilingual_str& error : errors) {
+        result_errors.push_back(error.original);
     }
     result.pushKV("errors", result_errors);
 
@@ -4239,12 +4240,12 @@ static UniValue upgradewallet(const JSONRPCRequest& request)
         version = request.params[0].get_int();
     }
 
-    std::string error;
-    std::vector<std::string> warnings;
+    bilingual_str error;
+    std::vector<bilingual_str> warnings;
     if (!pwallet->UpgradeWallet(version, error, warnings)) {
-        throw JSONRPCError(RPC_WALLET_ERROR, error);
+        throw JSONRPCError(RPC_WALLET_ERROR, error.original);
     }
-    return error;
+    return error.original;
 }
 
 UniValue abortrescan(const JSONRPCRequest& request); // in rpcdump.cpp
diff --git a/src/wallet/scriptpubkeyman.cpp b/src/wallet/scriptpubkeyman.cpp
index ecb95d599d..e4be5045e1 100644
--- a/src/wallet/scriptpubkeyman.cpp
+++ b/src/wallet/scriptpubkeyman.cpp
@@ -377,10 +377,9 @@ bool LegacyScriptPubKeyMan::CanGetAddresses(bool internal) const
     return keypool_has_keys;
 }
 
-bool LegacyScriptPubKeyMan::Upgrade(int prev_version, std::string& error)
+bool LegacyScriptPubKeyMan::Upgrade(int prev_version, bilingual_str& error)
 {
     LOCK(cs_KeyStore);
-    error = "";
     bool hd_upgrade = false;
     bool split_upgrade = false;
     if (m_storage.CanSupportFeature(FEATURE_HD) && !IsHDEnabled()) {
@@ -405,7 +404,7 @@ bool LegacyScriptPubKeyMan::Upgrade(int prev_version, std::string& error)
     // Regenerate the keypool if upgraded to HD
     if (hd_upgrade) {
         if (!TopUp()) {
-            error = _("Unable to generate keys").translated;
+            error = _("Unable to generate keys");
             return false;
         }
     }
diff --git a/src/wallet/scriptpubkeyman.h b/src/wallet/scriptpubkeyman.h
index 3117b13d35..5414fc5923 100644
--- a/src/wallet/scriptpubkeyman.h
+++ b/src/wallet/scriptpubkeyman.h
@@ -19,6 +19,7 @@
 #include <boost/signals2/signal.hpp>
 
 enum class OutputType;
+struct bilingual_str;
 
 // Wallet storage things that ScriptPubKeyMans need in order to be able to store things to the wallet database.
 // It provides access to things that are part of the entire wallet and not specific to a ScriptPubKeyMan such as
@@ -191,7 +192,7 @@ public:
     virtual bool CanGetAddresses(bool internal = false) const { return false; }
 
     /** Upgrades the wallet to the specified version */
-    virtual bool Upgrade(int prev_version, std::string& error) { return false; }
+    virtual bool Upgrade(int prev_version, bilingual_str& error) { return false; }
 
     virtual bool HavePrivateKeys() const { return false; }
 
@@ -343,7 +344,7 @@ public:
 
     bool SetupGeneration(bool force = false) override;
 
-    bool Upgrade(int prev_version, std::string& error) override;
+    bool Upgrade(int prev_version, bilingual_str& error) override;
 
     bool HavePrivateKeys() const override;
 
diff --git a/src/wallet/test/wallet_tests.cpp b/src/wallet/test/wallet_tests.cpp
index c049f2f15f..0826b88f0a 100644
--- a/src/wallet/test/wallet_tests.cpp
+++ b/src/wallet/test/wallet_tests.cpp
@@ -15,6 +15,7 @@
 #include <rpc/server.h>
 #include <test/util/logging.h>
 #include <test/util/setup_common.h>
+#include <util/translation.h>
 #include <validation.h>
 #include <wallet/coincontrol.h>
 #include <wallet/test/wallet_test_fixture.h>
@@ -30,8 +31,8 @@ BOOST_FIXTURE_TEST_SUITE(wallet_tests, WalletTestingSetup)
 
 static std::shared_ptr<CWallet> TestLoadWallet(interfaces::Chain& chain)
 {
-    std::string error;
-    std::vector<std::string> warnings;
+    bilingual_str error;
+    std::vector<bilingual_str> warnings;
     auto wallet = CWallet::CreateWalletFromFile(chain, WalletLocation(""), error, warnings);
     wallet->postInitProcess();
     return wallet;
@@ -515,7 +516,7 @@ public:
         CTransactionRef tx;
         CAmount fee;
         int changePos = -1;
-        std::string error;
+        bilingual_str error;
         CCoinControl dummy;
         {
             BOOST_CHECK(wallet->CreateTransaction({recipient}, tx, fee, changePos, error, dummy));
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index a20ede59fd..a893548971 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -27,6 +27,7 @@
 #include <util/fees.h>
 #include <util/moneystr.h>
 #include <util/rbf.h>
+#include <util/string.h>
 #include <util/translation.h>
 #include <wallet/coincontrol.h>
 #include <wallet/fees.h>
@@ -149,34 +150,34 @@ void UnloadWallet(std::shared_ptr<CWallet>&& wallet)
     }
 }
 
-std::shared_ptr<CWallet> LoadWallet(interfaces::Chain& chain, const WalletLocation& location, std::string& error, std::vector<std::string>& warnings)
+std::shared_ptr<CWallet> LoadWallet(interfaces::Chain& chain, const WalletLocation& location, bilingual_str& error, std::vector<bilingual_str>& warnings)
 {
     try {
         if (!CWallet::Verify(chain, location, false, error, warnings)) {
-            error = "Wallet file verification failed: " + error;
+            error = Untranslated("Wallet file verification failed.") + Untranslated(" ") + error;
             return nullptr;
         }
 
         std::shared_ptr<CWallet> wallet = CWallet::CreateWalletFromFile(chain, location, error, warnings);
         if (!wallet) {
-            error = "Wallet loading failed: " + error;
+            error = Untranslated("Wallet loading failed.") + Untranslated(" ") + error;
             return nullptr;
         }
         AddWallet(wallet);
         wallet->postInitProcess();
         return wallet;
     } catch (const std::runtime_error& e) {
-        error = e.what();
+        error = Untranslated(e.what());
         return nullptr;
     }
 }
 
-std::shared_ptr<CWallet> LoadWallet(interfaces::Chain& chain, const std::string& name, std::string& error, std::vector<std::string>& warnings)
+std::shared_ptr<CWallet> LoadWallet(interfaces::Chain& chain, const std::string& name, bilingual_str& error, std::vector<bilingual_str>& warnings)
 {
     return LoadWallet(chain, WalletLocation(name), error, warnings);
 }
 
-WalletCreationStatus CreateWallet(interfaces::Chain& chain, const SecureString& passphrase, uint64_t wallet_creation_flags, const std::string& name, std::string& error, std::vector<std::string>& warnings, std::shared_ptr<CWallet>& result)
+WalletCreationStatus CreateWallet(interfaces::Chain& chain, const SecureString& passphrase, uint64_t wallet_creation_flags, const std::string& name, bilingual_str& error, std::vector<bilingual_str>& warnings, std::shared_ptr<CWallet>& result)
 {
     // Indicate that the wallet is actually supposed to be blank and not just blank to make it encrypted
     bool create_blank = (wallet_creation_flags & WALLET_FLAG_BLANK_WALLET);
@@ -189,39 +190,39 @@ WalletCreationStatus CreateWallet(interfaces::Chain& chain, const SecureString&
     // Check the wallet file location
     WalletLocation location(name);
     if (location.Exists()) {
-        error = "Wallet " + location.GetName() + " already exists.";
+        error = strprintf(Untranslated("Wallet %s already exists."), location.GetName());
         return WalletCreationStatus::CREATION_FAILED;
     }
 
     // Wallet::Verify will check if we're trying to create a wallet with a duplicate name.
     if (!CWallet::Verify(chain, location, false, error, warnings)) {
-        error = "Wallet file verification failed: " + error;
+        error = Untranslated("Wallet file verification failed.") + Untranslated(" ") + error;
         return WalletCreationStatus::CREATION_FAILED;
     }
 
     // Do not allow a passphrase when private keys are disabled
     if (!passphrase.empty() && (wallet_creation_flags & WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
-        error = "Passphrase provided but private keys are disabled. A passphrase is only used to encrypt private keys, so cannot be used for wallets with private keys disabled.";
+        error = Untranslated("Passphrase provided but private keys are disabled. A passphrase is only used to encrypt private keys, so cannot be used for wallets with private keys disabled.");
         return WalletCreationStatus::CREATION_FAILED;
     }
 
     // Make the wallet
     std::shared_ptr<CWallet> wallet = CWallet::CreateWalletFromFile(chain, location, error, warnings, wallet_creation_flags);
     if (!wallet) {
-        error = "Wallet creation failed: " + error;
+        error = Untranslated("Wallet creation failed.") + Untranslated(" ") + error;
         return WalletCreationStatus::CREATION_FAILED;
     }
 
     // Encrypt the wallet
     if (!passphrase.empty() && !(wallet_creation_flags & WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
         if (!wallet->EncryptWallet(passphrase)) {
-            error = "Error: Wallet created but failed to encrypt.";
+            error = Untranslated("Error: Wallet created but failed to encrypt.");
             return WalletCreationStatus::ENCRYPTION_FAILED;
         }
         if (!create_blank) {
             // Unlock the wallet
             if (!wallet->Unlock(passphrase)) {
-                error = "Error: Wallet was encrypted but could not be unlocked";
+                error = Untranslated("Error: Wallet was encrypted but could not be unlocked");
                 return WalletCreationStatus::ENCRYPTION_FAILED;
             }
 
@@ -233,7 +234,7 @@ WalletCreationStatus CreateWallet(interfaces::Chain& chain, const SecureString&
                 } else {
                     for (auto spk_man : wallet->GetActiveScriptPubKeyMans()) {
                         if (!spk_man->SetupGeneration()) {
-                            error = "Unable to generate initial keys";
+                            error = Untranslated("Unable to generate initial keys");
                             return WalletCreationStatus::CREATION_FAILED;
                         }
                     }
@@ -2520,7 +2521,7 @@ SigningResult CWallet::SignMessage(const std::string& message, const PKHash& pkh
     return SigningResult::PRIVATE_KEY_NOT_AVAILABLE;
 }
 
-bool CWallet::FundTransaction(CMutableTransaction& tx, CAmount& nFeeRet, int& nChangePosInOut, std::string& strFailReason, bool lockUnspents, const std::set<int>& setSubtractFeeFromOutputs, CCoinControl coinControl)
+bool CWallet::FundTransaction(CMutableTransaction& tx, CAmount& nFeeRet, int& nChangePosInOut, bilingual_str& error, bool lockUnspents, const std::set<int>& setSubtractFeeFromOutputs, CCoinControl coinControl)
 {
     std::vector<CRecipient> vecSend;
 
@@ -2542,7 +2543,7 @@ bool CWallet::FundTransaction(CMutableTransaction& tx, CAmount& nFeeRet, int& nC
     LOCK(cs_wallet);
 
     CTransactionRef tx_new;
-    if (!CreateTransaction(vecSend, tx_new, nFeeRet, nChangePosInOut, strFailReason, coinControl, false)) {
+    if (!CreateTransaction(vecSend, tx_new, nFeeRet, nChangePosInOut, error, coinControl, false)) {
         return false;
     }
 
@@ -2658,7 +2659,7 @@ OutputType CWallet::TransactionChangeType(OutputType change_type, const std::vec
     return m_default_address_type;
 }
 
-bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CTransactionRef& tx, CAmount& nFeeRet, int& nChangePosInOut, std::string& strFailReason, const CCoinControl& coin_control, bool sign)
+bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CTransactionRef& tx, CAmount& nFeeRet, int& nChangePosInOut, bilingual_str& error, const CCoinControl& coin_control, bool sign)
 {
     CAmount nValue = 0;
     const OutputType change_type = TransactionChangeType(coin_control.m_change_type ? *coin_control.m_change_type : m_default_change_type, vecSend);
@@ -2669,7 +2670,7 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CTransac
     {
         if (nValue < 0 || recipient.nAmount < 0)
         {
-            strFailReason = _("Transaction amounts must not be negative").translated;
+            error = _("Transaction amounts must not be negative");
             return false;
         }
         nValue += recipient.nAmount;
@@ -2679,7 +2680,7 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CTransac
     }
     if (vecSend.empty())
     {
-        strFailReason = _("Transaction must have at least one recipient").translated;
+        error = _("Transaction must have at least one recipient");
         return false;
     }
 
@@ -2716,7 +2717,7 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CTransac
                 // destination in case we don't need change.
                 CTxDestination dest;
                 if (!reservedest.GetReservedDestination(dest, true)) {
-                    strFailReason = _("Transaction needs a change address, but we can't generate it. Please call keypoolrefill first.").translated;
+                    error = _("Transaction needs a change address, but we can't generate it. Please call keypoolrefill first.");
                 }
                 scriptChange = GetScriptForDestination(dest);
                 assert(!dest.empty() || scriptChange.empty());
@@ -2778,12 +2779,12 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CTransac
                         if (recipient.fSubtractFeeFromAmount && nFeeRet > 0)
                         {
                             if (txout.nValue < 0)
-                                strFailReason = _("The transaction amount is too small to pay the fee").translated;
+                                error = _("The transaction amount is too small to pay the fee");
                             else
-                                strFailReason = _("The transaction amount is too small to send after the fee has been deducted").translated;
+                                error = _("The transaction amount is too small to send after the fee has been deducted");
                         }
                         else
-                            strFailReason = _("Transaction amount too small").translated;
+                            error = _("Transaction amount too small");
                         return false;
                     }
                     txNew.vout.push_back(txout);
@@ -2811,7 +2812,7 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CTransac
                             continue;
                         }
                         else {
-                            strFailReason = _("Insufficient funds").translated;
+                            error = _("Insufficient funds");
                             return false;
                         }
                     }
@@ -2842,7 +2843,7 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CTransac
                         }
                         else if ((unsigned int)nChangePosInOut > txNew.vout.size())
                         {
-                            strFailReason = _("Change index out of range").translated;
+                            error = _("Change index out of range");
                             return false;
                         }
 
@@ -2861,14 +2862,14 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CTransac
 
                 nBytes = CalculateMaximumSignedTxSize(CTransaction(txNew), this, coin_control.fAllowWatchOnly);
                 if (nBytes < 0) {
-                    strFailReason = _("Signing transaction failed").translated;
+                    error = _("Signing transaction failed");
                     return false;
                 }
 
                 nFeeNeeded = GetMinimumFee(*this, nBytes, coin_control, &feeCalc);
                 if (feeCalc.reason == FeeReason::FALLBACK && !m_allow_fallback_fee) {
                     // eventually allow a fallback fee
-                    strFailReason = _("Fee estimation failed. Fallbackfee is disabled. Wait a few blocks or enable -fallbackfee.").translated;
+                    error = _("Fee estimation failed. Fallbackfee is disabled. Wait a few blocks or enable -fallbackfee.");
                     return false;
                 }
 
@@ -2908,7 +2909,7 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CTransac
                     // fee to pay for the new output and still meet nFeeNeeded
                     // Or we should have just subtracted fee from recipients and
                     // nFeeNeeded should not have changed
-                    strFailReason = _("Transaction fee and change calculation failed").translated;
+                    error = _("Transaction fee and change calculation failed");
                     return false;
                 }
 
@@ -2961,7 +2962,7 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CTransac
         }
 
         if (sign && !SignTransaction(txNew)) {
-            strFailReason = _("Signing transaction failed").translated;
+            error = _("Signing transaction failed");
             return false;
         }
 
@@ -2971,20 +2972,20 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CTransac
         // Limit size
         if (GetTransactionWeight(*tx) > MAX_STANDARD_TX_WEIGHT)
         {
-            strFailReason = _("Transaction too large").translated;
+            error = _("Transaction too large");
             return false;
         }
     }
 
     if (nFeeRet > m_default_max_tx_fee) {
-        strFailReason = TransactionErrorString(TransactionError::MAX_FEE_EXCEEDED);
+        error = Untranslated(TransactionErrorString(TransactionError::MAX_FEE_EXCEEDED));
         return false;
     }
 
     if (gArgs.GetBoolArg("-walletrejectlongchains", DEFAULT_WALLET_REJECT_LONG_CHAINS)) {
         // Lastly, ensure this tx will pass the mempool's chain limits
         if (!chain().checkChainLimits(tx)) {
-            strFailReason = _("Transaction has too long of a mempool chain").translated;
+            error = _("Transaction has too long of a mempool chain");
             return false;
         }
     }
@@ -3656,7 +3657,7 @@ std::vector<std::string> CWallet::GetDestValues(const std::string& prefix) const
     return values;
 }
 
-bool CWallet::Verify(interfaces::Chain& chain, const WalletLocation& location, bool salvage_wallet, std::string& error_string, std::vector<std::string>& warnings)
+bool CWallet::Verify(interfaces::Chain& chain, const WalletLocation& location, bool salvage_wallet, bilingual_str& error_string, std::vector<bilingual_str>& warnings)
 {
     // Do some checking on wallet path. It should be either a:
     //
@@ -3670,17 +3671,17 @@ bool CWallet::Verify(interfaces::Chain& chain, const WalletLocation& location, b
     if (!(path_type == fs::file_not_found || path_type == fs::directory_file ||
           (path_type == fs::symlink_file && fs::is_directory(wallet_path)) ||
           (path_type == fs::regular_file && fs::path(location.GetName()).filename() == location.GetName()))) {
-        error_string = strprintf(
+        error_string = Untranslated(strprintf(
               "Invalid -wallet path '%s'. -wallet path should point to a directory where wallet.dat and "
               "database/log.?????????? files can be stored, a location where such a directory could be created, "
               "or (for backwards compatibility) the name of an existing data file in -walletdir (%s)",
-              location.GetName(), GetWalletDir());
+              location.GetName(), GetWalletDir()));
         return false;
     }
 
     // Make sure that the wallet path doesn't clash with an existing wallet path
     if (IsWalletLoaded(wallet_path)) {
-        error_string = strprintf("Error loading wallet %s. Duplicate -wallet filename specified.", location.GetName());
+        error_string = Untranslated(strprintf("Error loading wallet %s. Duplicate -wallet filename specified.", location.GetName()));
         return false;
     }
 
@@ -3692,7 +3693,7 @@ bool CWallet::Verify(interfaces::Chain& chain, const WalletLocation& location, b
             return false;
         }
     } catch (const fs::filesystem_error& e) {
-        error_string = strprintf("Error loading wallet %s. %s", location.GetName(), fsbridge::get_filesystem_error_message(e));
+        error_string = Untranslated(strprintf("Error loading wallet %s. %s", location.GetName(), fsbridge::get_filesystem_error_message(e)));
         return false;
     }
 
@@ -3708,7 +3709,7 @@ bool CWallet::Verify(interfaces::Chain& chain, const WalletLocation& location, b
     return WalletBatch::VerifyDatabaseFile(wallet_path, warnings, error_string);
 }
 
-std::shared_ptr<CWallet> CWallet::CreateWalletFromFile(interfaces::Chain& chain, const WalletLocation& location, std::string& error, std::vector<std::string>& warnings, uint64_t wallet_creation_flags)
+std::shared_ptr<CWallet> CWallet::CreateWalletFromFile(interfaces::Chain& chain, const WalletLocation& location, bilingual_str& error, std::vector<bilingual_str>& warnings, uint64_t wallet_creation_flags)
 {
     const std::string walletFile = WalletDataFilePath(location.GetPath()).string();
 
@@ -3721,7 +3722,7 @@ std::shared_ptr<CWallet> CWallet::CreateWalletFromFile(interfaces::Chain& chain,
         std::unique_ptr<CWallet> tempWallet = MakeUnique<CWallet>(&chain, location, WalletDatabase::Create(location.GetPath()));
         DBErrors nZapWalletRet = tempWallet->ZapWalletTx(vWtx);
         if (nZapWalletRet != DBErrors::LOAD_OK) {
-            error = strprintf(_("Error loading %s: Wallet corrupted").translated, walletFile);
+            error = strprintf(_("Error loading %s: Wallet corrupted"), walletFile);
             return nullptr;
         }
     }
@@ -3736,26 +3737,26 @@ std::shared_ptr<CWallet> CWallet::CreateWalletFromFile(interfaces::Chain& chain,
     DBErrors nLoadWalletRet = walletInstance->LoadWallet(fFirstRun);
     if (nLoadWalletRet != DBErrors::LOAD_OK) {
         if (nLoadWalletRet == DBErrors::CORRUPT) {
-            error = strprintf(_("Error loading %s: Wallet corrupted").translated, walletFile);
+            error = strprintf(_("Error loading %s: Wallet corrupted"), walletFile);
             return nullptr;
         }
         else if (nLoadWalletRet == DBErrors::NONCRITICAL_ERROR)
         {
             warnings.push_back(strprintf(_("Error reading %s! All keys read correctly, but transaction data"
-                                          " or address book entries might be missing or incorrect.").translated,
+                                           " or address book entries might be missing or incorrect."),
                 walletFile));
         }
         else if (nLoadWalletRet == DBErrors::TOO_NEW) {
-            error = strprintf(_("Error loading %s: Wallet requires newer version of %s").translated, walletFile, PACKAGE_NAME);
+            error = strprintf(_("Error loading %s: Wallet requires newer version of %s"), walletFile, PACKAGE_NAME);
             return nullptr;
         }
         else if (nLoadWalletRet == DBErrors::NEED_REWRITE)
         {
-            error = strprintf(_("Wallet needed to be rewritten: restart %s to complete").translated, PACKAGE_NAME);
+            error = strprintf(_("Wallet needed to be rewritten: restart %s to complete"), PACKAGE_NAME);
             return nullptr;
         }
         else {
-            error = strprintf(_("Error loading %s").translated, walletFile);
+            error = strprintf(_("Error loading %s"), walletFile);
             return nullptr;
         }
     }
@@ -3781,7 +3782,7 @@ std::shared_ptr<CWallet> CWallet::CreateWalletFromFile(interfaces::Chain& chain,
                 // Legacy wallets need SetupGeneration here.
                 for (auto spk_man : walletInstance->GetActiveScriptPubKeyMans()) {
                     if (!spk_man->SetupGeneration()) {
-                        error = _("Unable to generate initial keys").translated;
+                        error = _("Unable to generate initial keys");
                         return nullptr;
                     }
                 }
@@ -3791,36 +3792,36 @@ std::shared_ptr<CWallet> CWallet::CreateWalletFromFile(interfaces::Chain& chain,
         walletInstance->chainStateFlushed(chain.getTipLocator());
     } else if (wallet_creation_flags & WALLET_FLAG_DISABLE_PRIVATE_KEYS) {
         // Make it impossible to disable private keys after creation
-        error = strprintf(_("Error loading %s: Private keys can only be disabled during creation").translated, walletFile);
+        error = strprintf(_("Error loading %s: Private keys can only be disabled during creation"), walletFile);
         return NULL;
     } else if (walletInstance->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
         for (auto spk_man : walletInstance->GetActiveScriptPubKeyMans()) {
             if (spk_man->HavePrivateKeys()) {
-                warnings.push_back(strprintf(_("Warning: Private keys detected in wallet {%s} with disabled private keys").translated, walletFile));
+                warnings.push_back(strprintf(_("Warning: Private keys detected in wallet {%s} with disabled private keys"), walletFile));
                 break;
             }
         }
     }
 
     if (!gArgs.GetArg("-addresstype", "").empty() && !ParseOutputType(gArgs.GetArg("-addresstype", ""), walletInstance->m_default_address_type)) {
-        error = strprintf(_("Unknown address type '%s'").translated, gArgs.GetArg("-addresstype", ""));
+        error = strprintf(_("Unknown address type '%s'"), gArgs.GetArg("-addresstype", ""));
         return nullptr;
     }
 
     if (!gArgs.GetArg("-changetype", "").empty() && !ParseOutputType(gArgs.GetArg("-changetype", ""), walletInstance->m_default_change_type)) {
-        error = strprintf(_("Unknown change type '%s'").translated, gArgs.GetArg("-changetype", ""));
+        error = strprintf(_("Unknown change type '%s'"), gArgs.GetArg("-changetype", ""));
         return nullptr;
     }
 
     if (gArgs.IsArgSet("-mintxfee")) {
         CAmount n = 0;
         if (!ParseMoney(gArgs.GetArg("-mintxfee", ""), n) || 0 == n) {
-            error = AmountErrMsg("mintxfee", gArgs.GetArg("-mintxfee", "")).translated;
+            error = AmountErrMsg("mintxfee", gArgs.GetArg("-mintxfee", ""));
             return nullptr;
         }
         if (n > HIGH_TX_FEE_PER_KB) {
-            warnings.push_back(AmountHighWarn("-mintxfee").translated + " " +
-                              _("This is the minimum transaction fee you pay on every transaction.").translated);
+            warnings.push_back(AmountHighWarn("-mintxfee") + Untranslated(" ") +
+                               _("This is the minimum transaction fee you pay on every transaction."));
         }
         walletInstance->m_min_fee = CFeeRate(n);
     }
@@ -3828,12 +3829,12 @@ std::shared_ptr<CWallet> CWallet::CreateWalletFromFile(interfaces::Chain& chain,
     if (gArgs.IsArgSet("-fallbackfee")) {
         CAmount nFeePerK = 0;
         if (!ParseMoney(gArgs.GetArg("-fallbackfee", ""), nFeePerK)) {
-            error = strprintf(_("Invalid amount for -fallbackfee=<amount>: '%s'").translated, gArgs.GetArg("-fallbackfee", ""));
+            error = strprintf(_("Invalid amount for -fallbackfee=<amount>: '%s'"), gArgs.GetArg("-fallbackfee", ""));
             return nullptr;
         }
         if (nFeePerK > HIGH_TX_FEE_PER_KB) {
-            warnings.push_back(AmountHighWarn("-fallbackfee").translated + " " +
-                              _("This is the transaction fee you may pay when fee estimates are not available.").translated);
+            warnings.push_back(AmountHighWarn("-fallbackfee") + Untranslated(" ") +
+                               _("This is the transaction fee you may pay when fee estimates are not available."));
         }
         walletInstance->m_fallback_fee = CFeeRate(nFeePerK);
     }
@@ -3843,28 +3844,28 @@ std::shared_ptr<CWallet> CWallet::CreateWalletFromFile(interfaces::Chain& chain,
     if (gArgs.IsArgSet("-discardfee")) {
         CAmount nFeePerK = 0;
         if (!ParseMoney(gArgs.GetArg("-discardfee", ""), nFeePerK)) {
-            error = strprintf(_("Invalid amount for -discardfee=<amount>: '%s'").translated, gArgs.GetArg("-discardfee", ""));
+            error = strprintf(_("Invalid amount for -discardfee=<amount>: '%s'"), gArgs.GetArg("-discardfee", ""));
             return nullptr;
         }
         if (nFeePerK > HIGH_TX_FEE_PER_KB) {
-            warnings.push_back(AmountHighWarn("-discardfee").translated + " " +
-                              _("This is the transaction fee you may discard if change is smaller than dust at this level").translated);
+            warnings.push_back(AmountHighWarn("-discardfee") + Untranslated(" ") +
+                               _("This is the transaction fee you may discard if change is smaller than dust at this level"));
         }
         walletInstance->m_discard_rate = CFeeRate(nFeePerK);
     }
     if (gArgs.IsArgSet("-paytxfee")) {
         CAmount nFeePerK = 0;
         if (!ParseMoney(gArgs.GetArg("-paytxfee", ""), nFeePerK)) {
-            error = AmountErrMsg("paytxfee", gArgs.GetArg("-paytxfee", "")).translated;
+            error = AmountErrMsg("paytxfee", gArgs.GetArg("-paytxfee", ""));
             return nullptr;
         }
         if (nFeePerK > HIGH_TX_FEE_PER_KB) {
-            warnings.push_back(AmountHighWarn("-paytxfee").translated + " " +
-                              _("This is the transaction fee you will pay if you send a transaction.").translated);
+            warnings.push_back(AmountHighWarn("-paytxfee") + Untranslated(" ") +
+                               _("This is the transaction fee you will pay if you send a transaction."));
         }
         walletInstance->m_pay_tx_fee = CFeeRate(nFeePerK, 1000);
         if (walletInstance->m_pay_tx_fee < chain.relayMinFee()) {
-            error = strprintf(_("Invalid amount for -paytxfee=<amount>: '%s' (must be at least %s)").translated,
+            error = strprintf(_("Invalid amount for -paytxfee=<amount>: '%s' (must be at least %s)"),
                 gArgs.GetArg("-paytxfee", ""), chain.relayMinFee().ToString());
             return nullptr;
         }
@@ -3873,23 +3874,23 @@ std::shared_ptr<CWallet> CWallet::CreateWalletFromFile(interfaces::Chain& chain,
     if (gArgs.IsArgSet("-maxtxfee")) {
         CAmount nMaxFee = 0;
         if (!ParseMoney(gArgs.GetArg("-maxtxfee", ""), nMaxFee)) {
-            error = AmountErrMsg("maxtxfee", gArgs.GetArg("-maxtxfee", "")).translated;
+            error = AmountErrMsg("maxtxfee", gArgs.GetArg("-maxtxfee", ""));
             return nullptr;
         }
         if (nMaxFee > HIGH_MAX_TX_FEE) {
-            warnings.push_back(_("-maxtxfee is set very high! Fees this large could be paid on a single transaction.").translated);
+            warnings.push_back(_("-maxtxfee is set very high! Fees this large could be paid on a single transaction."));
         }
         if (CFeeRate(nMaxFee, 1000) < chain.relayMinFee()) {
-            error = strprintf(_("Invalid amount for -maxtxfee=<amount>: '%s' (must be at least the minrelay fee of %s to prevent stuck transactions)").translated,
-                                       gArgs.GetArg("-maxtxfee", ""), chain.relayMinFee().ToString());
+            error = strprintf(_("Invalid amount for -maxtxfee=<amount>: '%s' (must be at least the minrelay fee of %s to prevent stuck transactions)"),
+                gArgs.GetArg("-maxtxfee", ""), chain.relayMinFee().ToString());
             return nullptr;
         }
         walletInstance->m_default_max_tx_fee = nMaxFee;
     }
 
     if (chain.relayMinFee().GetFeePerK() > HIGH_TX_FEE_PER_KB) {
-        warnings.push_back(AmountHighWarn("-minrelaytxfee").translated + " " +
-                    _("The wallet will avoid paying less than the minimum relay fee.").translated);
+        warnings.push_back(AmountHighWarn("-minrelaytxfee") + Untranslated(" ") +
+                           _("The wallet will avoid paying less than the minimum relay fee."));
     }
 
     walletInstance->m_confirm_target = gArgs.GetArg("-txconfirmtarget", DEFAULT_TX_CONFIRM_TARGET);
@@ -3949,7 +3950,7 @@ std::shared_ptr<CWallet> CWallet::CreateWalletFromFile(interfaces::Chain& chain,
             }
 
             if (rescan_height != block_height) {
-                error = _("Prune: last wallet synchronisation goes beyond pruned data. You need to -reindex (download the whole blockchain again in case of pruned node)").translated;
+                error = _("Prune: last wallet synchronisation goes beyond pruned data. You need to -reindex (download the whole blockchain again in case of pruned node)");
                 return nullptr;
             }
         }
@@ -3974,7 +3975,7 @@ std::shared_ptr<CWallet> CWallet::CreateWalletFromFile(interfaces::Chain& chain,
         {
             WalletRescanReserver reserver(*walletInstance);
             if (!reserver.reserve() || (ScanResult::SUCCESS != walletInstance->ScanForWalletTransactions(chain.getBlockHash(rescan_height), rescan_height, {} /* max height */, reserver, true /* update */).status)) {
-                error = _("Failed to rescan the wallet during initialization").translated;
+                error = _("Failed to rescan the wallet during initialization");
                 return nullptr;
             }
         }
@@ -4034,7 +4035,7 @@ const CAddressBookData* CWallet::FindAddressBookEntry(const CTxDestination& dest
     return &address_book_it->second;
 }
 
-bool CWallet::UpgradeWallet(int version, std::string& error, std::vector<std::string>& warnings)
+bool CWallet::UpgradeWallet(int version, bilingual_str& error, std::vector<bilingual_str>& warnings)
 {
     int prev_version = GetVersion();
     int nMaxVersion = version;
@@ -4043,12 +4044,12 @@ bool CWallet::UpgradeWallet(int version, std::string& error, std::vector<std::st
         WalletLogPrintf("Performing wallet upgrade to %i\n", FEATURE_LATEST);
         nMaxVersion = FEATURE_LATEST;
         SetMinVersion(FEATURE_LATEST); // permanently upgrade the wallet immediately
-    }
-    else
+    } else {
         WalletLogPrintf("Allowing wallet upgrade up to %i\n", nMaxVersion);
+    }
     if (nMaxVersion < GetVersion())
     {
-        error = _("Cannot downgrade wallet").translated;
+        error = _("Cannot downgrade wallet");
         return false;
     }
     SetMaxVersion(nMaxVersion);
@@ -4058,7 +4059,7 @@ bool CWallet::UpgradeWallet(int version, std::string& error, std::vector<std::st
     // Do not upgrade versions to any version between HD_SPLIT and FEATURE_PRE_SPLIT_KEYPOOL unless already supporting HD_SPLIT
     int max_version = GetVersion();
     if (!CanSupportFeature(FEATURE_HD_SPLIT) && max_version >= FEATURE_HD_SPLIT && max_version < FEATURE_PRE_SPLIT_KEYPOOL) {
-        error = _("Cannot upgrade a non HD split wallet without upgrading to support pre split keypool. Please use version 169900 or no version specified.").translated;
+        error = _("Cannot upgrade a non HD split wallet without upgrading to support pre split keypool. Please use version 169900 or no version specified.");
         return false;
     }
 
diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
index 72b3cf1fb8..3be3435596 100644
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -40,6 +40,8 @@
 
 using LoadWalletFn = std::function<void(std::unique_ptr<interfaces::Wallet> wallet)>;
 
+struct bilingual_str;
+
 //! Explicitly unload and delete the wallet.
 //! Blocks the current thread after signaling the unload intent so that all
 //! wallet clients release the wallet.
@@ -52,7 +54,7 @@ bool RemoveWallet(const std::shared_ptr<CWallet>& wallet);
 bool HasWallets();
 std::vector<std::shared_ptr<CWallet>> GetWallets();
 std::shared_ptr<CWallet> GetWallet(const std::string& name);
-std::shared_ptr<CWallet> LoadWallet(interfaces::Chain& chain, const WalletLocation& location, std::string& error, std::vector<std::string>& warnings);
+std::shared_ptr<CWallet> LoadWallet(interfaces::Chain& chain, const WalletLocation& location, bilingual_str& error, std::vector<bilingual_str>& warnings);
 std::unique_ptr<interfaces::Handler> HandleLoadWallet(LoadWalletFn load_wallet);
 
 enum class WalletCreationStatus {
@@ -61,7 +63,7 @@ enum class WalletCreationStatus {
     ENCRYPTION_FAILED
 };
 
-WalletCreationStatus CreateWallet(interfaces::Chain& chain, const SecureString& passphrase, uint64_t wallet_creation_flags, const std::string& name, std::string& error, std::vector<std::string>& warnings, std::shared_ptr<CWallet>& result);
+WalletCreationStatus CreateWallet(interfaces::Chain& chain, const SecureString& passphrase, uint64_t wallet_creation_flags, const std::string& name, bilingual_str& error, std::vector<bilingual_str>& warnings, std::shared_ptr<CWallet>& result);
 
 //! -paytxfee default
 constexpr CAmount DEFAULT_PAY_TX_FEE = 0;
@@ -930,7 +932,7 @@ public:
      * Insert additional inputs into the transaction by
      * calling CreateTransaction();
      */
-    bool FundTransaction(CMutableTransaction& tx, CAmount& nFeeRet, int& nChangePosInOut, std::string& strFailReason, bool lockUnspents, const std::set<int>& setSubtractFeeFromOutputs, CCoinControl);
+    bool FundTransaction(CMutableTransaction& tx, CAmount& nFeeRet, int& nChangePosInOut, bilingual_str& error, bool lockUnspents, const std::set<int>& setSubtractFeeFromOutputs, CCoinControl);
     // Fetch the inputs and sign with SIGHASH_ALL.
     bool SignTransaction(CMutableTransaction& tx) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
     // Sign the tx given the input coins and sighash.
@@ -961,7 +963,7 @@ public:
      * selected by SelectCoins(); Also create the change output, when needed
      * @note passing nChangePosInOut as -1 will result in setting a random position
      */
-    bool CreateTransaction(const std::vector<CRecipient>& vecSend, CTransactionRef& tx, CAmount& nFeeRet, int& nChangePosInOut, std::string& strFailReason, const CCoinControl& coin_control, bool sign = true);
+    bool CreateTransaction(const std::vector<CRecipient>& vecSend, CTransactionRef& tx, CAmount& nFeeRet, int& nChangePosInOut, bilingual_str& error, const CCoinControl& coin_control, bool sign = true);
     /**
      * Submit the transaction to the node's mempool and then relay to peers.
      * Should be called after CreateTransaction unless you want to abort
@@ -1124,10 +1126,10 @@ public:
     bool MarkReplaced(const uint256& originalHash, const uint256& newHash);
 
     //! Verify wallet naming and perform salvage on the wallet if required
-    static bool Verify(interfaces::Chain& chain, const WalletLocation& location, bool salvage_wallet, std::string& error_string, std::vector<std::string>& warnings);
+    static bool Verify(interfaces::Chain& chain, const WalletLocation& location, bool salvage_wallet, bilingual_str& error_string, std::vector<bilingual_str>& warnings);
 
     /* Initializes the wallet, returns a new CWallet instance or a null pointer in case of an error */
-    static std::shared_ptr<CWallet> CreateWalletFromFile(interfaces::Chain& chain, const WalletLocation& location, std::string& error, std::vector<std::string>& warnings, uint64_t wallet_creation_flags = 0);
+    static std::shared_ptr<CWallet> CreateWalletFromFile(interfaces::Chain& chain, const WalletLocation& location, bilingual_str& error, std::vector<bilingual_str>& warnings, uint64_t wallet_creation_flags = 0);
 
     /**
      * Wallet post-init setup
@@ -1180,7 +1182,7 @@ public:
     };
 
     /** Upgrade the wallet */
-    bool UpgradeWallet(int version, std::string& error, std::vector<std::string>& warnings);
+    bool UpgradeWallet(int version, bilingual_str& error, std::vector<bilingual_str>& warnings);
 
     //! Returns all unique ScriptPubKeyMans in m_internal_spk_managers and m_external_spk_managers
     std::set<ScriptPubKeyMan*> GetActiveScriptPubKeyMans() const;
diff --git a/src/wallet/walletdb.cpp b/src/wallet/walletdb.cpp
index 79316ca3e7..45033f9bac 100644
--- a/src/wallet/walletdb.cpp
+++ b/src/wallet/walletdb.cpp
@@ -913,12 +913,12 @@ bool WalletBatch::RecoverKeysOnlyFilter(void *callbackData, CDataStream ssKey, C
     return true;
 }
 
-bool WalletBatch::VerifyEnvironment(const fs::path& wallet_path, std::string& errorStr)
+bool WalletBatch::VerifyEnvironment(const fs::path& wallet_path, bilingual_str& errorStr)
 {
     return BerkeleyBatch::VerifyEnvironment(wallet_path, errorStr);
 }
 
-bool WalletBatch::VerifyDatabaseFile(const fs::path& wallet_path, std::vector<std::string>& warnings, std::string& errorStr)
+bool WalletBatch::VerifyDatabaseFile(const fs::path& wallet_path, std::vector<bilingual_str>& warnings, bilingual_str& errorStr)
 {
     return BerkeleyBatch::VerifyDatabaseFile(wallet_path, warnings, errorStr, WalletBatch::Recover);
 }
diff --git a/src/wallet/walletdb.h b/src/wallet/walletdb.h
index 2701481c58..ae72a5b265 100644
--- a/src/wallet/walletdb.h
+++ b/src/wallet/walletdb.h
@@ -272,9 +272,9 @@ public:
     /* Function to determine if a certain KV/key-type is a key (cryptographical key) type */
     static bool IsKeyType(const std::string& strType);
     /* verifies the database environment */
-    static bool VerifyEnvironment(const fs::path& wallet_path, std::string& errorStr);
+    static bool VerifyEnvironment(const fs::path& wallet_path, bilingual_str& errorStr);
     /* verifies the database file */
-    static bool VerifyDatabaseFile(const fs::path& wallet_path, std::vector<std::string>& warnings, std::string& errorStr);
+    static bool VerifyDatabaseFile(const fs::path& wallet_path, std::vector<bilingual_str>& warnings, bilingual_str& errorStr);
 
     //! write the hdchain model (external chain child index counter)
     bool WriteHDChain(const CHDChain& chain);
diff --git a/src/wallet/wallettool.cpp b/src/wallet/wallettool.cpp
index 65643669c2..522efaa884 100644
--- a/src/wallet/wallettool.cpp
+++ b/src/wallet/wallettool.cpp
@@ -4,6 +4,7 @@
 
 #include <fs.h>
 #include <util/system.h>
+#include <util/translation.h>
 #include <wallet/wallet.h>
 #include <wallet/walletutil.h>
 
@@ -117,9 +118,9 @@ bool ExecuteWalletToolFunc(const std::string& command, const std::string& name)
             tfm::format(std::cerr, "Error: no wallet file at %s\n", name);
             return false;
         }
-        std::string error;
+        bilingual_str error;
         if (!WalletBatch::VerifyEnvironment(path, error)) {
-            tfm::format(std::cerr, "Error loading %s. Is wallet being used by other process?\n", name);
+            tfm::format(std::cerr, "%s\nError loading %s. Is wallet being used by other process?\n", error.original, name);
             return false;
         }
         std::shared_ptr<CWallet> wallet_instance = LoadWallet(name, path);
diff --git a/test/functional/tool_wallet.py b/test/functional/tool_wallet.py
index b3d496dd51..039ce7daee 100755
--- a/test/functional/tool_wallet.py
+++ b/test/functional/tool_wallet.py
@@ -15,6 +15,7 @@ from test_framework.util import assert_equal
 
 BUFFER_SIZE = 16 * 1024
 
+
 class ToolWalletTest(BitcoinTestFramework):
     def set_test_params(self):
         self.num_nodes = 1
@@ -48,7 +49,7 @@ class ToolWalletTest(BitcoinTestFramework):
         h = hashlib.sha1()
         mv = memoryview(bytearray(BUFFER_SIZE))
         with open(self.wallet_path, 'rb', buffering=0) as f:
-            for n in iter(lambda : f.readinto(mv), 0):
+            for n in iter(lambda: f.readinto(mv), 0):
                 h.update(mv[:n])
         return h.hexdigest()
 
@@ -69,7 +70,12 @@ class ToolWalletTest(BitcoinTestFramework):
         self.assert_raises_tool_error('Invalid command: help', 'help')
         self.assert_raises_tool_error('Error: two methods provided (info and create). Only one method should be provided.', 'info', 'create')
         self.assert_raises_tool_error('Error parsing command line arguments: Invalid parameter -foo', '-foo')
-        self.assert_raises_tool_error('Error loading wallet.dat. Is wallet being used by other process?', '-wallet=wallet.dat', 'info')
+        self.assert_raises_tool_error(
+            'Error initializing wallet database environment "{}"!\nError loading wallet.dat. Is wallet being used by other process?'
+            .format(os.path.join(self.nodes[0].datadir, self.chain, 'wallets')),
+            '-wallet=wallet.dat',
+            'info',
+        )
         self.assert_raises_tool_error('Error: no wallet file at nonexistent.dat', '-wallet=nonexistent.dat', 'info')
 
     def test_tool_wallet_info(self):
@@ -84,7 +90,7 @@ class ToolWalletTest(BitcoinTestFramework):
         #
         # self.log.debug('Setting wallet file permissions to 400 (read-only)')
         # os.chmod(self.wallet_path, stat.S_IRUSR)
-        # assert(self.wallet_permissions() in ['400', '666']) # Sanity check. 666 because Appveyor.
+        # assert self.wallet_permissions() in ['400', '666'] # Sanity check. 666 because Appveyor.
         # shasum_before = self.wallet_shasum()
         timestamp_before = self.wallet_timestamp()
         self.log.debug('Wallet file timestamp before calling info: {}'.format(timestamp_before))
@@ -103,7 +109,7 @@ class ToolWalletTest(BitcoinTestFramework):
         self.log_wallet_timestamp_comparison(timestamp_before, timestamp_after)
         self.log.debug('Setting wallet file permissions back to 600 (read/write)')
         os.chmod(self.wallet_path, stat.S_IRUSR | stat.S_IWUSR)
-        assert(self.wallet_permissions() in ['600', '666']) # Sanity check. 666 because Appveyor.
+        assert self.wallet_permissions() in ['600', '666']  # Sanity check. 666 because Appveyor.
         #
         # TODO: Wallet tool info should not write to the wallet file.
         # The following lines should be uncommented and the tests still succeed:
diff --git a/test/functional/wallet_bumpfee.py b/test/functional/wallet_bumpfee.py
index 9ba23db42d..27197e3b6d 100755
--- a/test/functional/wallet_bumpfee.py
+++ b/test/functional/wallet_bumpfee.py
@@ -300,7 +300,7 @@ def test_maxtxfee_fails(self, rbf_node, dest_address):
     self.restart_node(1, ['-maxtxfee=0.000025'] + self.extra_args[1])
     rbf_node.walletpassphrase(WALLET_PASSPHRASE, WALLET_PASSPHRASE_TIMEOUT)
     rbfid = spend_one_input(rbf_node, dest_address)
-    assert_raises_rpc_error(-4, "Unable to create transaction: Fee exceeds maximum configured by -maxtxfee", rbf_node.bumpfee, rbfid)
+    assert_raises_rpc_error(-4, "Unable to create transaction. Fee exceeds maximum configured by -maxtxfee", rbf_node.bumpfee, rbfid)
     self.restart_node(1, self.extra_args[1])
     rbf_node.walletpassphrase(WALLET_PASSPHRASE, WALLET_PASSPHRASE_TIMEOUT)
 
@@ -517,7 +517,7 @@ def test_no_more_inputs_fails(self, rbf_node, dest_address):
     rbf_node.generatetoaddress(1, dest_address)
     # spend all funds, no change output
     rbfid = rbf_node.sendtoaddress(rbf_node.getnewaddress(), rbf_node.getbalance(), "", "", True)
-    assert_raises_rpc_error(-4, "Unable to create transaction: Insufficient funds", rbf_node.bumpfee, rbfid)
+    assert_raises_rpc_error(-4, "Unable to create transaction. Insufficient funds", rbf_node.bumpfee, rbfid)
 
 
 if __name__ == "__main__":
diff --git a/test/functional/wallet_multiwallet.py b/test/functional/wallet_multiwallet.py
index c569416292..580a61f9f3 100755
--- a/test/functional/wallet_multiwallet.py
+++ b/test/functional/wallet_multiwallet.py
@@ -227,10 +227,10 @@ class MultiWalletTest(BitcoinTestFramework):
         assert_raises_rpc_error(-18, 'Wallet wallets not found.', self.nodes[0].loadwallet, 'wallets')
 
         # Fail to load duplicate wallets
-        assert_raises_rpc_error(-4, 'Wallet file verification failed: Error loading wallet w1. Duplicate -wallet filename specified.', self.nodes[0].loadwallet, wallet_names[0])
+        assert_raises_rpc_error(-4, 'Wallet file verification failed. Error loading wallet w1. Duplicate -wallet filename specified.', self.nodes[0].loadwallet, wallet_names[0])
 
         # Fail to load duplicate wallets by different ways (directory and filepath)
-        assert_raises_rpc_error(-4, "Wallet file verification failed: Error loading wallet wallet.dat. Duplicate -wallet filename specified.", self.nodes[0].loadwallet, 'wallet.dat')
+        assert_raises_rpc_error(-4, "Wallet file verification failed. Error loading wallet wallet.dat. Duplicate -wallet filename specified.", self.nodes[0].loadwallet, 'wallet.dat')
 
         # Fail to load if one wallet is a copy of another
         assert_raises_rpc_error(-4, "BerkeleyBatch: Can't open database w8_copy (duplicates fileid", self.nodes[0].loadwallet, 'w8_copy')
@@ -240,7 +240,7 @@ class MultiWalletTest(BitcoinTestFramework):
 
 
         # Fail to load if wallet file is a symlink
-        assert_raises_rpc_error(-4, "Wallet file verification failed: Invalid -wallet path 'w8_symlink'", self.nodes[0].loadwallet, 'w8_symlink')
+        assert_raises_rpc_error(-4, "Wallet file verification failed. Invalid -wallet path 'w8_symlink'", self.nodes[0].loadwallet, 'w8_symlink')
 
         # Fail to load if a directory is specified that doesn't contain a wallet
         os.mkdir(wallet_dir('empty_wallet_dir'))