diff --git a/etc/schema.json b/etc/schema.json
index 03db8c7c3d06..cf03a2db30b6 100644
--- a/etc/schema.json
+++ b/etc/schema.json
@@ -340,6 +340,9 @@
                 },
                 "type": {
                     "type": "string"
+                },
+                "code": {
+                    "type": "integer"
                 }
             },
             "additionalProperties": false