diff --git a/src/rpc/rawtransaction.cpp b/src/rpc/rawtransaction.cpp
--- a/src/rpc/rawtransaction.cpp
+++ b/src/rpc/rawtransaction.cpp
@@ -889,6 +889,7 @@
                  "If the transaction has a complete set of signatures"},
                 {RPCResult::Type::ARR,
                  "errors",
+                 /* optional */ true,
                  "Script verification errors (if there are any)",
                  {
                      {RPCResult::Type::OBJ,
@@ -2063,8 +2064,8 @@
                  "the PSBT have been filled"},
                 {RPCResult::Type::STR, "next",
                  "Role of the next person that this psbt needs to go to"},
-                {RPCResult::Type::STR, "error",
-                 "Error message if there is one"},
+                {RPCResult::Type::STR, "error", /* optional */ true,
+                 "Error message (if there is one)"},
             }},
         RPCExamples{HelpExampleCli("analyzepsbt", "\"psbt\"")}}
         .Check(request);
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -3942,6 +3942,7 @@
                  "If the transaction has a complete set of signatures"},
                 {RPCResult::Type::ARR,
                  "errors",
+                 /* optional */ true,
                  "Script verification errors (if there are any)",
                  {
                      {RPCResult::Type::OBJ,