The HTTP 409 Conflict response status code indicates a request conflict with the current state of the target resource.
Conflicts are most likely to occur in response to a PUT request. For example, you may get a 409 response when uploading a file that is older than the existing one on the server, resulting in a version control conflict.
409 Conflict
| Specification |
|---|
| HTTP Semantics # status.409 |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
409 |
Yes |
12 |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
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https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/409