OPDC API error code

LOCK_CONFLICT

HTTP status 409

An unlock attempt against a lock another user holds. 409.

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

How errors work, and what to retryEvery error code