We are sunsetting On-Premises API. Refer to our On-Premises API Sunset document for details, and to learn how to migrate to our next-generation Cloud API.
You can use a phone number that is already registered with the WhatsApp Messenger or the WhatsApp Business App. Remember to back up your chat history from the WhatsApp Business App.
Once you migrate a phone number to the WhatsApp Business Platform, you cannot use that number on the WhatsApp Business App concurrently. Your number must be used either on the Business Platform or on the Business App.
To migrate a number, you must first delete that WhatsApp account.
Account Settings | Delete My Account | Deletion Steps |
Once the number is available, return to Business Manager and refresh your browser window. You can now download a certificate and proceed with the registration process.