Every error of the Spillard Connect API is an RFC 9457 application/problem+json body whose type points here. Branch on errorCode, never on title or detail.
Not retryable as is: change the request, the token or the target before sending it again.
errorCode | Meaning |
|---|---|
concurrency.etag_mismatch | The resource changed since you read it: `If-Match` no longer matches its `ETag`. Read it again, then retry the update. |
The full registry is the top-level x-error-codes list (and the ErrorCode schema) of /openapi/v1.json; the API reference is at /scalar.