Action Required: From early May, API users must include standardized condition details when creating or updating listings in certain coins category. Update your integration to stay compliant. Learn more here.
Size Standardization Update: Apparel & Footwear listings with non-standard, missing, or incomplete size information may be blocked or hidden starting August 2026. Normalization begins in June. Learn more here.
Starting September, 2026, three listing fields are available to support ECGT commercial guarantee label for EU business sellers: Durability guarantee (new), brand, and model. Learn more here.

RESOLVED: Sandbox : Internal Error when calling createFulfillmentPolicy API

Site or Service Name:

Account API

Wed May 20 2026 04:52:21 GMT-0700 (Mountain Standard Time)

createFulfillmentPolicy API call returning 20500 internal error in sandbox environment.

error:
"errorId": 20500,
"message": "System error.",

"longMessage": "Internal application error."

Resolved