409 Conflict

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The HTTP 409 Conflict response status code indicates a request conflict with current state of the server.

Conflicts are most likely to occur in response to a PUT request. For example, you may get a 409 response when uploading a file which is older than the one already on the server resulting in a version control conflict.

Status

409 Conflict

Specifications

Specification Title
RFC 7231, section 6.5.8: 409 Conflict Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content

See also