OPDC API error code

QUEUE_UNAVAILABLE

HTTP status 503

The request could not be queued for the on-premise agent. 503, retryable. Nothing was dispatched.

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

How errors work, and what to retryEvery error code