I am experiencing an issue with sending template messages via the WhatsApp Business API. This problem affects all numbers, all WABAs, and all templates. The issue started on August 15, 2024, at 6:30 PM (UTC).

Everything was working fine until suddenly, all API calls to send templates began returning the following error:

{ "error": { "message": "(#135000) Generic user error", "type": "OAuthException", "code": 135000, "error_data": { "messaging_product": "whatsapp", "details": "Generic user error" }, "fbtrace_id": "Av0dVKUL0SV0jqWPzvGwivZ" } }

Graph API saved url: https://developers.facebook.com/tools/explorer/?session_id=3746311095639769

Non-template messages are being sent without any issues. The templates are marked as having good quality, and the phone numbers also have a good quality rating. My Business Portfolio is already verified with legal business documentation which can only be verified once in one Business Portfolio

I have already tried creating a new template, but the same error persists.

Could you please assist with resolving this issue?