diff --git a/backend/address2UPRN/main.py b/backend/address2UPRN/main.py
index d361db15..2cec8a2e 100644
--- a/backend/address2UPRN/main.py
+++ b/backend/address2UPRN/main.py
@@ -807,6 +807,7 @@ def handler(event, context, local=False):
                     logger.error(f"Failed to update subtask status: {db_error}")
 
     # Return error if all records failed
+    logger.fatal(results)
     if errors and not results:
         return {"statusCode": 500, "body": json.dumps({"errors": errors})}