[doc] rpcwallet: Only fail rescan when blocks have been pruned

doc/release-notes.md

@@ -88,6 +88,16 @@ Configuration
   the selected network. This change takes only effect if the selected network
   is not mainnet.
 
+Wallet
+------
+
+- When in pruned mode, a rescan that was triggered by an `importwallet`,
+  `importpubkey`, `importaddress`, or `importprivkey` RPC will only fail when
+  blocks have been pruned. Previously it would fail when `-prune` has been set.
+  This change allows to set `-prune` to a high value (e.g. the disk size) and
+  the calls to any of the import RPCs would fail when the first block is
+  pruned.
+
 Credits
 =======
 

src/wallet/rpcdump.cpp

@@ -586,7 +586,7 @@ UniValue importwallet(const JSONRPCRequest& request)
         // Exit early and print an error.
         // If a block is pruned after this check, we will import the key(s),
         // but fail the rescan with a generic error.
-        throw JSONRPCError(RPC_WALLET_ERROR, "Importing wallets is disabled in pruned mode");
+        throw JSONRPCError(RPC_WALLET_ERROR, "Importing wallets is disabled when blocks are pruned");
     }
 
     WalletRescanReserver reserver(pwallet);