409 Conflict

In This Article

Status
Specifications
See also

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

Document Tags and Contributors

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Client error
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HTTP Status Code
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Contributors to this page: fscholz

Last updated by: fscholz, Feb 24, 2017, 8:24:44 AM

See also

HTTP
Guides:
Resources and URIs
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2. Data URIs
3. Introduction to MIME Types
4. Complete list of MIME Types
5. Choosing between www and non-www URLs
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8. Mozilla web security guidelines
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References:
HTTP headers
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61. TE
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67. Vary
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69. WWW-Authenticate
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71. X-Content-Type-Options
72. X-DNS-Prefetch-Control
73. X-Forwarded-For
74. X-Forwarded-Host
75. X-Forwarded-Proto
76. X-Frame-Options
77. X-XSS-Protection
HTTP request methods
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HTTP response status codes
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24. 408 Request Timeout
25. 409 Conflict
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28. 412 Precondition Failed
29. 413 Payload Too Large
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31. 415 Unsupported Media Type
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CSP directives
1. CSP: base-uri
2. CSP: block-all-mixed-content
3. CSP: child-src
4. CSP: connect-src
5. CSP: default-src
6. CSP: font-src
7. CSP: form-action
8. CSP: frame-ancestors
9. CSP: frame-src
10. CSP: img-src
11. CSP: manifest-src
12. CSP: media-src
13. CSP: object-src
14. CSP: plugin-types
15. CSP: referrer
16. CSP: report-uri
17. CSP: require-sri-for
18. CSP: sandbox
19. CSP: script-src
20. CSP: style-src
21. CSP: upgrade-insecure-requests
22. CSP: worker-src

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