422
Unprocessable Content
4xx Client error
Class
RFC 9110 §15.5.21
Defined in
What does HTTP 422 mean?
The request is well-formed but contains semantic errors. Popular in REST APIs (Rails, Laravel, FastAPI) for validation errors: the JSON is valid, but a required field is missing, an email is invalid or a value is out of range. The body should list the field errors.
4xx Client error: The request has a problem the client can fix: wrong URL, missing credentials, bad data or too many requests.
Common causes of a 422 error
- Validation failed for one or more fields.
How to fix 422 Unprocessable Content
- Read the error body and fix the listed fields.
422 and SEO
Not relevant for web pages.
Example response
HTTP/1.1 422 Unprocessable ContentRelated status codes
- 400 Bad Request — The server cannot process the request because it is malformed.
- 409 Conflict — The request conflicts with the current state of the resource.
- 415 Unsupported Media Type — The server does not support the format of the request body.
Check which status code a URL returns with the HTTP header checker.
All HTTP status codesSearch the full list of status codes from 100 to 599 with their meanings and SEO impact.
Open the full list Frequently asked questions
What does status code 422 mean?
422 Unprocessable Content: The request is well-formed but contains semantic errors.
How do I fix a 422 error?
Read the error body and fix the listed fields.
Does 422 affect SEO?
Not relevant for web pages.