63024: Invalid message recipient

This error occurs when a WhatsApp message cannot be delivered because Meta identifies the recipient as an invalid WhatsApp user or applies another recipient-side restriction.

• The recipient phone number is not enabled for WhatsApp.
• The recipient has not accepted WhatsApp's Terms of Service and Privacy Policy.
• The recipient is using an old or unsupported version of the WhatsApp client on their phone.

• Confirm that the recipient's phone number is an active WhatsApp number and that the recipient can receive messages in WhatsApp.
• Ask the recipient to open WhatsApp and accept the latest Terms of Service and Privacy Policy, then retry the message.
• Ask the recipient to update WhatsApp to a supported version on their device, then retry delivery.

• WhatsApp Business Platform with Twilio
• Overview of the WhatsApp Business Platform with Twilio
• The WhatsApp Business Platform with Twilio: Best Practices and FAQs