I created a sandbox ad account on Facebook API then created a system user, put all the permissions on it and associated it with this sandbox ad account to be able to create the ads but when I try to create an ad it asks to add a payment method.

How can I add a payment method to an account that should be a test account?

How do I resolve this?

Hi, I'm interested in learning more about data protection and there are two things of interest to me here: Llama as it benchmarks for related tasks in comparison with other models, and encryption of data in transit and at rest. Any resources and support would be very good!

And what about this? I don't even know what do to because i can't recognize this kind of events.

When executing Conversion API, We have been receiving the following error message:
{"error":{"message":"Unsupported post request. Object with ID '232743414474413' does not exist, cannot be loaded due to missing permissions, or does not support this operation. Please read the Graph API documentation at https:\/\/developers.facebook.com\/docs\/graph-api","type":"GraphMethodException","code":100,"error_subcode":33,"fbtrace_id":"ADg7QWTo9fzb1ExdutQXrgT"}}
We’re using a system user to execute the API and have assigned access permissions to the dataset in question, the same way we’ve done for other datasets where the API works fine.
Could you please let us know what might be causing this issue and suggest any steps to resolve it?

I recently attempted to delete a phone number from one WhatsApp Business Platform Account (WABA) and assign it to another WABA. However, when trying to use the deleted phone number with the new WABA, I encountered the error: 'Please double check that this phone number is registered on a WhatsApp Business app account.' Could anyone explain why this happens? Is there any way to resolve this issue or reuse the deleted phone number in a new WABA?