4xx Client Error
What it means
The request conflicts with the current state of the target resource.
Common causes
Common in APIs when trying to create a resource that already exists, or updating a resource that changed since it was last fetched.
How to fix it
Re-fetch the current state of the resource and resolve the conflict (e.g. use a different identifier, or merge changes) before retrying.
Frequently asked questions
What does HTTP 409 mean?
The request conflicts with the current state of the target resource.
What causes a 409 Conflict?
Common in APIs when trying to create a resource that already exists, or updating a resource that changed since it was last fetched.
How do I fix a 409 error?
Re-fetch the current state of the resource and resolve the conflict (e.g. use a different identifier, or merge changes) before retrying.
Other 4xx Client Error codes
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