Authorise.net showing error for test webhook

Question

Can you please tell me what went wrong? I am testing Webhook and it's showing this error. Also I used the https://apitest.authorize.net/rest/v1/notifications to get the notification details. and its returning

"notificationId": "92222984-0593-4d3f-815f-c6aa6954525e", 
"deliveryStatus": "RetryPending", 
"eventType": "net.authorize.payment.authcapture.created", 
"eventDate": "2023-08-22T16:03:11.133", 
"webhookId": "06a407f7-17d2-467e-b6ab-c0e37e79eb79"

Answer 1

http://testpayment.test doesn’t exist.

The name suggests it is a domain name that is used internally by your network.

The third-party service doesn’t have access to your internal network (neither HTTP nor DNS).

You need to use a public facing URL.