Merge bitcoin/bitcoin#25368: doc: Update importaddress mention incompatibility with descriptor wallet

e3609cdc01cf992800f28b20b0107b7fdc1f880e doc: Update importaddress mention incompatibility with descriptor wallet (BrokenProgrammer)

Pull request description:

  This is related to #25363 and offers a small update to the error messages from `EnsureLegacyScriptPubKeyMan` and `EnsureConstLegacyScriptPubKeyMan` to mention that they only are compatible with legacy wallets.

  The RPC documentation for `importaddress` is also updated to mention this as well as guide the user to the alternative `importdescriptors` for cases when using descriptor wallets.

  I'm thinking that we can introduce a "porting guide" document mentioned in #25363 in a separate PR since I would have to make myself more familiar with the subject before being able to tackle that.

ACKs for top commit:
  laanwj:
    Code review ACK e3609cdc01cf992800f28b20b0107b7fdc1f880e
  achow101:
    ACK e3609cdc01cf992800f28b20b0107b7fdc1f880e

Tree-SHA512: c7a924a7283fe59dc4e04c8c8fa034c15601f0b25eff09d975e98e2e8db5268ff470336b2d978d6916af9f782f9257b840d64bd15485b1742b4a8b8bfd0bb50f

2 files changed, 5 insertions, 4 deletions

diff --git a/src/wallet/rpc/backup.cpp b/src/wallet/rpc/backup.cpp
index aa9f23c886..5f1673fb12 100644
--- a/src/wallet/rpc/backup.cpp
+++ b/src/wallet/rpc/backup.cpp
@@ -198,14 +198,15 @@ RPCHelpMan importprivkey()
 RPCHelpMan importaddress()
 {
     return RPCHelpMan{"importaddress",
-                "\nAdds an address or script (in hex) that can be watched as if it were in your wallet but cannot be used to spend. Requires a new wallet backup.\n"
+            "\nAdds an address or script (in hex) that can be watched as if it were in your wallet but cannot be used to spend. Requires a new wallet backup.\n"
             "\nNote: This call can take over an hour to complete if rescan is true, during that time, other rpc calls\n"
             "may report that the imported address exists but related transactions are still missing, leading to temporarily incorrect/bogus balances and unspent outputs until rescan completes.\n"
             "If you have the full public key, you should call importpubkey instead of this.\n"
             "Hint: use importmulti to import more than one address.\n"
             "\nNote: If you import a non-standard raw script in hex form, outputs sending to it will be treated\n"
             "as change, and not show up in many RPCs.\n"
-            "Note: Use \"getwalletinfo\" to query the scanning progress.\n",
+            "Note: Use \"getwalletinfo\" to query the scanning progress.\n"
+            "Note: This command is only compatible with legacy wallets. Use \"importdescriptors\" with \"addr(X)\" for descriptor wallets.\n",
                 {
                     {"address", RPCArg::Type::STR, RPCArg::Optional::NO, "The Bitcoin address (or hex-encoded script)"},
                     {"label", RPCArg::Type::STR, RPCArg::Default{""}, "An optional label"},
diff --git a/src/wallet/rpc/util.cpp b/src/wallet/rpc/util.cpp
index 59683c5fd8..4fcb393226 100644
--- a/src/wallet/rpc/util.cpp
+++ b/src/wallet/rpc/util.cpp
@@ -101,7 +101,7 @@ LegacyScriptPubKeyMan& EnsureLegacyScriptPubKeyMan(CWallet& wallet, bool also_cr
         spk_man = wallet.GetOrCreateLegacyScriptPubKeyMan();
     }
     if (!spk_man) {
-        throw JSONRPCError(RPC_WALLET_ERROR, "This type of wallet does not support this command");
+        throw JSONRPCError(RPC_WALLET_ERROR, "Only legacy wallets are supported by this command");
     }
     return *spk_man;
 }
@@ -110,7 +110,7 @@ const LegacyScriptPubKeyMan& EnsureConstLegacyScriptPubKeyMan(const CWallet& wal
 {
     const LegacyScriptPubKeyMan* spk_man = wallet.GetLegacyScriptPubKeyMan();
     if (!spk_man) {
-        throw JSONRPCError(RPC_WALLET_ERROR, "This type of wallet does not support this command");
+        throw JSONRPCError(RPC_WALLET_ERROR, "Only legacy wallets are supported by this command");
     }
     return *spk_man;
 }