WhatsApp guides / Error 133010
WhatsApp error 133010: phone number not registered
Error 133010 means the business phone number you are sending from is not registered on the WhatsApp Business Platform. Meta's fix is to register the number, then try again.
Based on Meta's official documentation, checked 18 October 2026. Sources are linked at the end; where Meta gives no fix, we do not invent one.
What Meta says it means
Meta describes 133010 as the phone number not being registered on the WhatsApp Business Platform.
What Meta says to do
- Register the business phone number using Meta's registration process.
- Then send the message again.
Worth knowing
- Meta's register endpoint accepts 10 requests per number in a moving 72-hour window, so repeated failed attempts can lock you out for a while.