An Access Token URL: Zoho provides region-specific access token URLs. Select the region that best fits your Zoho data center:
AU: Select this option for Australia data center.
CN: Select this option for Canada data center.
EU: Select this option for the European Union data center.
IN: Select this option for the India data center.
US: Select this option for the United States data center.
Refer to Multi DC for more information about selecting a data center.If you need to configure OAuth2 from scratch, register an application with Zoho.Use these settings for your application:
Select Server-based Applications as the Client Type.
Copy the OAuth Callback URL enter it in the Zoho Authorized Redirect URIs field.
Copy the Client ID and Client Secret from the application and enter them in your credential.