diff --git a/src/v/pandaproxy/error.cc b/src/v/pandaproxy/error.cc
index 33a4c074b7092..aa119d91513e8 100644
--- a/src/v/pandaproxy/error.cc
+++ b/src/v/pandaproxy/error.cc
@@ -129,6 +129,8 @@ struct reply_error_category final : std::error_category {
             return "subject_version_not_deleted";
         case reply_error_code::compatibility_not_found:
             return "compatibility_not_found";
+        case reply_error_code::mode_not_found:
+            return "mode_not_found";
         case reply_error_code::serialization_error:
             return "serialization_error";
         case reply_error_code::consumer_already_exists:
@@ -140,6 +142,8 @@ struct reply_error_category final : std::error_category {
             return "Invalid schema version";
         case reply_error_code::compatibility_level_invalid:
             return "Invalid compatibility level";
+        case reply_error_code::mode_invalid:
+            return "Invalid mode";
         case reply_error_code::subject_version_operaton_not_permitted:
             return "Overwrite new schema is not permitted.";
         case reply_error_code::subject_version_has_references:
diff --git a/src/v/pandaproxy/error.h b/src/v/pandaproxy/error.h
index 0caba1ef0eaac..1216eae492c43 100644
--- a/src/v/pandaproxy/error.h
+++ b/src/v/pandaproxy/error.h
@@ -78,11 +78,13 @@ enum class reply_error_code : uint16_t {
     subject_version_soft_deleted = 40406,
     subject_version_not_deleted = 40407,
     compatibility_not_found = 40408,
+    mode_not_found = 40409,
     serialization_error = 40801,
     consumer_already_exists = 40902,
     schema_empty = 42201,
     schema_version_invalid = 42202,
     compatibility_level_invalid = 42203,
+    mode_invalid = 42204,
     subject_version_operaton_not_permitted = 42205,
     subject_version_has_references = 42206,
     subject_version_schema_id_already_exists = 42207,