409
HTTP
409 Conflict
The request conflicts with the current state of the server. Often due to concurrent modification or business rule violations.
Quand vous voyez ce code
When trying to create a resource that already exists, or updating a resource that was modified by another request.
Comment résoudre
Refresh the resource state, resolve conflicts, and retry. Use ETags for optimistic concurrency.
Spécification
Équivalents inter-protocoles
Comparaisons
Guides
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