Client error
HTTP 422: Unprocessable Content
HTTP 422 means the request syntax is valid but the content cannot be processed.
Meaning
The server understood the request format but rejected the instructions in the payload.
Common causes
Validation errors, semantic payload problems, or domain rule failures can cause it.
What to check
Inspect validation messages and correct the submitted fields or payload values.
Example response
HTTP/1.1 422 Unprocessable ContentReferences
Related HTTP status codes
Nearby codes often answer the next debugging question.