OPDC API error code

MAINTENANCE_LOCK

HTTP status 423

The operator-held maintenance lock. 423, retryable; the body names the holder.

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

How errors work, and what to retry Every error code