Hi Jordan,
Could you please check the application type, login to developer portal (
https://developer.ringcentral.com ) and click on the application and under settings you should see the "Platform Type". If the platform type is any one of below :
- Browser-Based
- Server-Web
- Server-Only
Then you would need to follow the OAuth 2.0 Code flow for authentication.
Please look up this discussion
https://devcommunity.ringcentral.com/ringcentraldev/topics/unauthorized-for-this-grant-type-error for more information.
Let us know if you have any question.
Hello Guys,
I am facing the same error but my username,password and extension number are correct Below are the screenshot could anyone help me out in this regard
First you need to go through using OAuth with Authorization code grant_Type and need to know how to put Authorization header .
Please check here:
https://developers.ringcentral.com/guide/authentication/oauth
https://developers.ringcentral.com/guide/authentication/auth-code-flow