Ironfang Finance API problem type

`result_gone`

Result unavailable. HTTP 410.

What it means

The saved result expired or was deleted. Its operation record remains, so replaying the same Idempotency-Key never validates or charges again.

What to do

Request a new validation with a new key if a fresh result is needed.

What the response carries

type: https://ironfang.uk/problems/result_gone, this page.
status: Always 410 for this code.
code: result_gone. Stable: branch on this, not on the wording of title or detail.
detail: What happened this time, safe to show to a person. It never carries invoice content.
request_id: The same value as the X-Ironfang-Request-ID header. Quote it to support.
retry_after_seconds: Never present for this code.
outcome: Absent. This code is not a statement about any document.

Problems follow RFC 9457 and are served as application/problem+json. A validation finding is never a Problem: an invalid invoice is a successful response that lists its findings. See every problem type, the Finance guide and the OpenAPI contract.