📄️ Resolve "Phone Number Not Eligible" Error
Meta requires a minimum activity history on a phone number before it can be connected to the WhatsApp Business Platform via Coexistence. New numbers and recently-registered ones are blocked until they meet this threshold.
📄️ Resolve "Number Already Registered" Error
If your phone number was previously connected to the WhatsApp Business Platform (API) — directly with Meta or through another Business Solution Provider — Meta's signup flow blocks the number from being reused for Coexistence until the previous registration is released.