Ironfang Finance API problem type

`billing_required`

Ironfang Finance subscription required. HTTP 402.

What it means

The organisation's plan does not include this operation, or its subscription is inactive or awaiting renewal. No work or usage was accepted. Existing results remain available.

What to do

Choose a paid Ironfang Finance plan in the portal, or restore the subscription. Free validation remains available within its allowance.

What the response carries

type: https://ironfang.uk/problems/billing_required, this page.
status: Always 402 for this code.
code: billing_required. 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.