409
⚠️ Client Error RFC 9110, Section 15.5.10
Conflict
The request could not be completed due to a conflict with the current state of the target resource.
Common Use
Used for resource conflicts: duplicate entry, optimistic locking failure, version mismatch, or concurrent modification issues.
API Endpoint
https://codes.uncodigo.com/http/409 Example with curl
curl -i https://codes.uncodigo.com/http/409Try It
GET /http/409 Click "Send Request" to see the response...
Example
Request
PUT /api/documents/123 HTTP/1.1
If-Match: "abc"
{"content": "new"}Response
HTTP/1.1 409 Conflict
{"error": "Document was modified by another user"}