The accepted values for the attribute.

The attribute accepts free text (no list to enumerate; message only) or the attribute key is unrecognized (framework-shaped). Check valueFormat first.

The API key was missing or not accepted. Not JSON: a bare text/plain string: api key not provided, invalid api key, or invalid api key syntax.

The key is valid but not permitted. {"message": "Insufficient scope"}: a read-only key sent a write (POST or PATCH). It is checked before the body is validated, even with ?dryRun=true. {"message": "Partner not authorized for this API"}: the account is not enabled for this API. It is checked after the request is validated, so an invalid request gets its 400 first.

The downstream deal system rejected the request, or returned a result the API could not use. On a create the deal may already exist, so check with your Sovrn representative before retrying; on a PATCH that set status, re-send the same request until it returns 200. An archived deal refuses every edit with a 502, so re-sending will not help. Carries a required upstream field. See the Errors guide.