Create a callback URL from https://webhook.site or https://beeceptor.com/ and use it as a callback URL. Run your tests and all the details of the callback request will be displayed on that
beeceptor.cominterface depending on the one you used.
- It will also help you see what we POST before implementing your side.
- It also helps to confirm that it's your side that needs to be corrected to receive the data posted