1004: Invalid content.

HTTP status: 422. May also be reported as a field-level finding in error.details[].

One or more parts in the request do not satisfy the published part schema or a content rule. The request is refused whole; nothing was sent or recorded.

• Read details[] for the exact param (a JSON Pointer into your request) and each field’s own fault code.
• Fetch the offending part’s schema from GET /v1/parts/{type}; validation rejects and points, it never coerces.

• Part schemas
• Sending messages guide