HTTP 412 Precondition Failed
4xx – Client error
| Status code | 412 |
|---|---|
| Reason phrase | Precondition Failed |
| Class | 4xx – Client error |
| Reference | RFC 9110 |
Frequently asked questions
What does HTTP status 412 mean?
A condition in the request headers (e.g. If-Match) was not met.
Is 412 an error?
Yes, a client error (4xx): the problem lies in the request – for example a wrong URL, missing authentication or invalid data.
Where is HTTP 412 defined?
Status code 412 is specified in RFC 9110.