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Rahul G avatar image
Rahul G asked Anirban answered

Facing 403 SMS permission required error even after having the SMS permission checked in - Did anyone face similar error? how did you fix it?

This error is seen when I am testing the SMS API

sms and text messaging
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1 Answer

Anirban avatar image
Anirban answered

403 means forbidden permission which means you are not authorized or allowed. This happens when you get with wrong credentials like client id or client secret or wrong phone number or extension etc.

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Developer sandbox tools

Using the RingCentral Phone for Desktop, you can dial or receive test calls, send and receive test SMS or Fax messages in your sandbox environment.

Download RingCentral Phone for Desktop:

Tip: switch to the "sandbox mode" before logging in the app:

  • On MacOS: press "fn + command + f2" keys
  • On Windows: press "Ctrl + F2" keys