HEPH-VAL-422

Validation failed

What the caller sees

This is the default detail sent in the problem+json response, verbatim:

The request failed validation. Each offending field and the rule it broke is listed under errors.

What to do as a developer

Guidance for the engineer who hit this code. It is non-normative: it is never sent on the wire and does not constrain an implementation. Wire behaviour is defined only by spec/heph-spec.md and the conformance vectors.

The request parsed but broke a validation rule, or a JSON document could not be canonicalised (for example an integer literal above 2^53-1, a duplicate member name or nesting deeper than 128). Fix the offending field in the request; the response lists each field and the rule it broke under errors. When your own handler rejects input, return this code with one entry per field rather than inventing a new code. It is also what signing a webhook with an unusable secret returns, which is a configuration fault, so fix the secret.

Defined in spec/heph-spec.md section 1. See all codes in the error index.