Using the WhatsApp Business app and PayPerWA together (coexistence)

Coexistence is Meta's option to run one number on both the WhatsApp Business app on your phone and the Cloud API. You choose it during connection when the number is already on the app. Meta decides whether a number is eligible when you connect it, so not every app number can use it.

What works

• Campaigns, templates, inbox, chatbots and the API all work from PayPerWA.
• Messages you send from the phone also appear in the PayPerWA inbox and fire the message.sent webhook.
• Customer replies reach both the phone and PayPerWA.

What is different

• The display name comes from the app. Change it in the app under Settings → Business tools → Business profile. The display name dialog in PayPerWA is read-only for these numbers.
• There is no PIN registration step; the app keeps the number registered.
• If you later remove the number from the app, the connection becomes a normal API number and the name must be reviewed by Meta.
• A number that is already on the API only (with any provider) cannot be switched to coexistence in place: it has to be removed from the API, set up on the WhatsApp Business app and connected again, and Meta still decides whether it is eligible.