← Error catalogue

422 Unprocessable Entity

The request was well-formed but semantically invalid.

Machine code: unprocessable

It passed shape validation but violates a business rule.

How to resolve

Read the detail and data members and adjust the request to satisfy the rule.

Response shape

Every error is an RFC 9457 application/problem+json document with a machine code and a trace_id you can quote to support.

{
  "type": "https://docs.openiris.io/errors/422",
  "title": "Unprocessable Entity",
  "status": 422,
  "code": "unprocessable",
  "detail": "Booking end must be after booking start.",
  "instance": "/v1/bookings",
  "trace_id": "0HMVABCDEF123"
}