Migrate an existing WhatsApp Number to a Business Account | Developer Documentation

Prepare an existing WhatsApp number for ChatArchitect

Before changing a working number, identify how it is used today and what should continue after connecting ChatArchitect. The route for the WhatsApp Business app is different from a move from another provider or an ordinary WhatsApp Messenger account.

Choose the case that matches your number

If you want to keep the Business app

Tell support that keeping the Business app active on the same number is part of the requirement. Confirm the available entry route before changing its registration. Do not delete the Business app account to begin coexistence setup.

Check what your particular CRM or help desk receives from that connection. Support for coexistence does not establish that all old chats, contacts or app actions will appear in every integration.

Prepare the acceptance checks

• The expected business number and account are connected.
• An agreed incoming message reaches the intended CRM conversation or application.
• An agreed outgoing message and its result are visible in the chosen tool.
• The Business app remains usable when coexistence was part of the agreed setup.
• The previous provider's workflows are handled according to the move plan.

Use the number-change acceptance checklist to record the outcome. A completed registration screen or a Meta migration status alone does not show that the new message route works.

Historical account deletion screenshots

These historical screenshots show account deletion; they do not establish the appropriate route for your number. Confirm the route with support before changing registration. Do not follow these steps to connect through Business app coexistence.