OPDC API error code

HEADER_INVALID

HTTP status 400

A correlation header that is present but not a UUID. 400.

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

How errors work, and what to retry Every error code