Error 20152 - Twilio
Register for SIGNAL by 8/31 for $250 off. Register now.

Error 20152

Product: Platform

Error - 20152

Invalid Header

The header of the JWT provided to the Twilio API was invalid.

Possible Causes

  • The structure of the header was invalid.
  • Required header values not provided
  • Provided header values invalid.

Possible Solution:

  • For the details on JWTs used as part of Public Key Client Validation, see the documentation
  • To check whether the JWT is structurally correct, you can use the tools available at

Need some help?

We all do sometimes; code is hard. Get help now from our support team, or lean on the wisdom of the crowd browsing the Twilio tag on Stack Overflow.