Troubleshooting the Twilio Sandbox for WhatsApp (Beta)

The Twilio Sandbox for WhatsApp Beta is usually fairly easy to setup, but some users have reported issues. Please read on for common error messages, and how to resolve them.

Error: Your number is not associated with the sandbox channel

This error indicates the From number you're attempting to use in your message is not associated with the Twilio Sandbox. Sandbox users who have not yet had their Twilio number provisioned for the WhatsApp beta will need to use the shared Twilio sandbox number selected when activating the sandbox. This number can be found in Console's WhatsApp Sandbox.

During the beta process, WhatsApp is gradually approving activations, so your request may not be approved right away. Once approved, you will be able to use your own Twilio number for outbound WhatsApp messages.

Error: Twilio could not find a Channel with the specified From address

This error indicates you have not yet enabled the Twilio Sandbox for WhatsApp on your project, or the From number you're attempting to use in your message is not formatted correctly.

To configure the Twilio Sandbox for WhatsApp, visit Console's WhatsApp Sandbox. Here you will select a shared Twilio sandbox number, and can double check the number once you have enabled the sandbox.

When sending WhatsApp messages via the Twilio REST API, the From address should be 'whatsapp:' followed by your sandbox number in E.164 formatting:

whatsapp:+13105551234

For more information on configuring the Twilio Sandbox for WhatsApp, and code samples for sending message, please see Getting Started with Twilio for WhatsApp (Beta).

WhatsApp Messages are Not Delivered

For help with WhatsApp messages not being delivered, please see our article Troubleshooting Undelivered Twilio for WhatsApp Messages.

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