Connect a debit or credit card to your WhatsApp Business account in Meta Business Suite to activate API conversation messaging.
Open business.facebook.com and click the portfolio dropdown in the top-left corner. Choose the verified business portfolio where your WhatsApp number resides.
In the left sidebar, navigate to Settings > Accounts > WhatsApp Accounts. Select your active account.
Click the Billing & Payments icon and select the WhatsApp Business Accounts tab.
Click Add Payment Method. Enter your credit/debit card details, complete 3D-secure bank verification, and ensure the card is set as the Default payment method.
Our team is ready to guide you through payment method verification.