OPDC API error code

REQUEST_EXPIRED

HTTP status 503

A write that could not start before its start-by deadline. 503, retryable. Nothing was written; retry with the same Idempotency-Key.

The API answers with a problem document (RFC 9457) whose type is https://twinn.engineering/errors/request-expired, and with X-Error-Code: REQUEST_EXPIRED. Branch on the code, never on the detail text.

How errors work, and what to retry Every error code