diff --git a/jpo-ode-core/src/main/resources/schemas/schema-srm.json b/jpo-ode-core/src/main/resources/schemas/schema-srm.json
index 57d271c85..8ac5e068a 100644
--- a/jpo-ode-core/src/main/resources/schemas/schema-srm.json
+++ b/jpo-ode-core/src/main/resources/schemas/schema-srm.json
@@ -87,7 +87,10 @@
                     "type": "string"
                 },
                 "recordGeneratedBy": {
-                    "type": "null"
+                    "type": [
+                        "string",
+                        "null"
+                    ]
                 },
                 "sanitized": {
                     "type": "boolean"