Question

Why am I getting 401 Unauthorized error with the error message: "You did not provide correct credentials" when sending messages with Messages API version 1?

Applies To

• Messages API
• JSON Web Token(JWT)
• Basic Authentication

Answer

The version 1 (v1) authentication is different from version 0 (v0.1). In version 1, if your number is linked with your application then you need to use JSON Web Token (JWT) authentication otherwise you will get 401 unauthorized errors. If you want to use basic authentication in version 1 then the number should not be linked to the application.

Additional Information

WhatsApp v0.1 to v1 Migration Guide

Messages API