Posts under category Facebook WhatsApp Business API

We keep getting back a 400 with the below body from Meta. It's getting spammed back to us all day, and we can not figure out what the issue is since our app is working and sending messages using WhatsApp as expected??
It would appear to be a response to sending a message to a customer.
Whatsapp 400 with body {"error":{"message":"(#131026) Message undeliverable","type":"OAuthException","code":131026,"fbtrace_id":"AYYJC2WQdNyiszB48I37cSK"}}
Whatsapp 400 with body {"error":{"message":"(#131026) Message undeliverable","type":"OAuthException","code":131026,"fbtrace_id":"A5PJwMshxlIxmJlgMJ8PGHI"}}
Anyone know what might be causing this?

What happens is that the Test WhatsApp Business Account is pointed to have the issue, but consequently it blocked all my account.
I've tried request an analysis, which not only didn't solve my problem, but blocked my possibility of trying to request another one, leaving my accoun PERMANENTLY disabled because of a number I didn't even use or added.

Hello, we are having a issue where our account was banned due to Test WhatsApp Business Account, that is a Meta WABA number for testing purpose shared among many accounts around the world and it seems that a lot of people are having the same problem.
This number despite being made available from Meta for testing purpose we never used it. We didn't even sent a message but even so it got blocked
We didn't find a way to solve this problem. We tried to open a ticket to restore the account but it wasn't resolved, and we tried a direct support and they didn't explain to was what happened or helped us to solve the issue.
Because of all that our WABA's were restricted and we are not being able to use our account, which is impacting negatively our entire Company

Sending template message with Media (our server url) is delivered successfully, In Some times its failed to deliver. "Media upload error" will return.
"errors":[{"code":131053,"title":"Media upload error","message":"Media upload error","error_data":{"details":"Your server hosting media content did not respond back in time. For better performance with links learn more about Media HTTP Caching under the error code section for Media upload error"}}]
Even after we update cache control for the media url, same error display
Any solution for this?