63110: The phone number registration error

This error appears when Twilio cannot finish registering a WhatsApp sender because the phone number is already registered with WhatsApp. It can also appear when Meta does not complete the request code step during registration.

• The phone number is already registered on WhatsApp.
• Meta request code failed during registration.

• Check that the phone number is not already registered for the account or any subaccounts.
• If the number is registered with WhatsApp or the WhatsApp Business app, delete that WhatsApp account before trying again.
• If the number is registered with another WhatsApp Business Platform, turn off Two-Factor Authentication in WhatsApp Manager and register the number again.
• If Meta request code failed, wait 5 minutes before trying again.
• If the number was registered with WhatsApp separately from Twilio, remove the number from that registration before retrying.

• Register WhatsApp senders using the Senders API
• Register WhatsApp senders using Self Sign-up
• Migrate phone numbers and WhatsApp senders