WhatsApp Business API - WhatsApp Account Number API | Developer Documentation

Check the destination of a send request

The ChatArchitect API Quick Start specifies international recipient telephone numbers without a plus sign, spaces or brackets for its send examples. It uses destination in a /whatsappmessage request for the recipient. A Meta account-number asset ID is not a replacement for that telephone number.

Prepare the intended recipient

• Confirm the country and full telephone number with the permitted test contact. Do not guess a country code from a local number.
• Keep the number as text in your application; check that import or spreadsheet formatting has not rounded it, changed its digits or converted it to scientific notation.
• For the documented ChatArchitect API send, use the Quick Start format: international digits without +, spaces or brackets.
• For a ready-made CRM or help desk, follow that integration's phone-field instructions. Its displayed format is not necessarily the raw API request format.

Keep the business number and the recipient separate

The connected business number identifies the business side of the conversation. The recipient in the send example is the customer side. Use the identifier guide and the business-number record when checking which value came from an account screen.

This guide describes the send example, not the meaning of every similarly named field in callback registration, template loading or a CRM. Follow each operation's documented context; do not apply a Meta ID or another operation's destination rule by analogy.

Verify the actual attempt

1. Check the destination in the outgoing request or sending-tool preview and the connection selected for it.
2. Use an appropriate test message for that contact and service window, following the API preparation guide.
3. Keep the response reference and check the later sending/delivery result for the same attempt.
4. If it fails, record the actual result and visible reason; a correctly formatted number alone does not prove WhatsApp availability or delivery.

Do not send repeatedly to a guessed number to find the intended person. Correct the source contact record and use an authorized test.