Ironfang Finance API problem type

`payload_too_large`

Payload too large. HTTP 413.

What it means

The body exceeds the size the operation accepts: 5 MiB for a document or a JSON input, 48 MiB for a report to verify.

What to do

Send a smaller body. Archives and compressed documents are not a way round the limit; they are refused.

What the response carries

type: https://ironfang.uk/problems/payload_too_large, this page.
status: Always 413 for this code.
code: payload_too_large. 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.