It looks like you’re referencing an error code: — most likely from Oracle Communications products (e.g., Oracle BRM, Oracle ECE, or Oracle OCOMC).

"account_no": "1002345", "start_date": "2025-02-28"

"operation": "createSubscription", "account_no": null, "service_id": "SV12345", "start_date": "2025-13-01" // invalid month

"account_no": "", "start_date": "2025-02-30"