The responsibility of acquiring the phone number for the campaign lies with the organization, and they have the liberty to select their desired network carrier and number.
The phone number chosen for the campaign must be registered with the Facebook Business Profile. Alternatively, if the client already has a registered phone number associated with their Facebook Business Profile, they may provide that number instead.
If the client wishes to exclusively register a new number for the purpose of managing the campaign, they may do so. For additional information on this matter, please refer to the following link: https://developers.facebook.com/docs/whatsapp/phone-numbers#migrate
The phone number utilized for WATI registration should not be employed for any other WhatsApp applications, including WhatsApp Personal or WhatsApp Business. In the event that the number is being used for such purposes, please delete the associated account(s).
The WATI account is employed for sending messages or templates to users, and campaign analytics are presented via the Threatcop tool. It is the full responsibility of WATI to ensure that campaign data is not shared with any external entities.
The client's desired custom templates must undergo verification by Facebook Business, which typically takes approximately 1-2 days.
WhatsApp changed its pricing model from charging businesses for each template message sent to charging them per conversation, which covers all messages delivered within a 24-hour timeframe. You can get a better gist of it on the following link: https://support.wati.io/l/en/article/1ytkxyyie9-what-is-conversation-based-pricing