I am building a function calling RingCentral API in Zoho CRM.
To invoke RingCentral API, I am trying to create connection filling out below and it is not working.
I put Authorize Url "https://platform.devtest.ringcentral.com/resapi/oauth/authorize", and "https://platform.devtest.ringcentral.com/resapi/oauth/token" for Access Token Url and Refresh Token Url. The response is always "improper grant" and "redirect uri does not match."
Is there any way to connect the API app with this method? Or should I use different authentication type?
There are three authentication type: Basic Authentication, oAuth1, and oAuth2. I was using oAuth2.
Did someone try the same thing?