4099 error code example

Example 1: 409 status code

The 409 (Conflict) status code indicates that the request
could not be completed due to a conflict with the current
state of the target resource. This code is used in situations
where the user might be able to resolve the conflict and resubmit the request.
The server SHOULD generate a payload that includes enough
information for a user to recognize the source of the conflict.

Example 2: 408 error

A 408 Request Timeout message is an HTTP status code that is returned to the client when a request to the server takes longer than the server's allocated timeout window. In this case, the server will terminate the connection if it is idle and thus return the 408 Request Timeout message