Invalid message recipient

For WhatsApp, the message is undeliverable due to the recipient being an invalid user on WhatsApp or other Meta restrictions for WhatsApp.

For WhatsApp, reasons can include:

• Recipient phone number is not a WhatsApp phone number.
• Recipient has not accepted WhatsApp's new Terms of Service and Privacy Policy.
• Recipient is using an old, unsupported version of the WhatsApp client for their phone.
• Meta blocked the delivery of Authentication template messages to the recipient. Meta does not support the Authentication use case for WhatsApp users registered with India (+91) phone numbers.
• Meta blocked the delivery of Marketing template messages to the recipient. Meta imposes an unspecified limit to how many marketing messages WhatsApp users registered with India (+91) phone numbers can receive at a given time. This limit is based on the number of marketing conversations opened with a user from any business, and is not related to the interactions between the user and your business.

• Confirm with the recipient that they have accepted Meta's latest Terms of Service for WhatsApp. If they have not, then send them this link https://wa.me/tos/20210210 to accept the latest WhatsApp Terms of Service.
• Confirm with the recipient that they have an active WhatsApp phone number on the latest client version for their phone.