My number is already used on another platform: what should I do?
A number can only be linked to one official-API platform at a time. Disconnect it from the other tool first, or use coexistence if your number is in the WhatsApp Business app.
Meta prevents the same number from being active on two platforms at once. If you see a message such as “number already registered”:
- Disconnect the number from the old platform (or ask its support to do it).
- In WhatzAI, a number already connected to another agent must first be disconnected from that one.
- If your number is in the regular WhatsApp Business app, choose the coexistence option: there is nothing to disconnect.
Careful: if the old platform still replies automatically, your customers would receive two replies. Turn it off before continuing.
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Updated 17 October 2026. Meta's rules change: if in doubt, check WhatsApp Business's official documentation.