1. Every callback Xendit sent, ideally, your server has to provide a response with 2XX status code which means that the callback we sent has been received by your server.

2. The callback endpoint might occasionally receive duplicate event, so, We suggest that your server has handling to not proceed the event that has been received and proceed before.

3. The callback event Xendit sent might not always be in the order in which they are generated, so, We suggest that your server has handling so that can still proceed the event with different orders.