WhatsApp Business Accounts (WABAs) allow you to manage your business through the WhatsApp Business Platform to communicate directly with your customers.
Some API calls require you to know your WABA ID. You have 3 ways of getting it:
accessToken
for information.To get Webhook events for a specific WABA, you need to explicitly subscribe to that WABA. You only need to subscribe to a WABA once and you will receive all Webhook events for phone numbers under that WABA. You don’t need to subscribe for every phone number.
See the following links for instructions on how to: