Hello @ravikumarmani93,
Thanks for sharing the screenshot with the details to understand the situation better.
Actually you need to ask the developer who have designed this Portal to be able to generate the Access & Refresh token pair for better guidence on it.
But I can find there are certain values which are not right for the certain request parameters as the screenshot provided.
Let's say the "clientId" and "clientSecret" - no way those are the valid Webex Integration client ID or, client Secret value.
You should be able to find these values in the Integration details page that you created in the Webex Developer Portal, under your Webex account. That should be corrected.
Basically you create the Webex Integration from here - https://developer.webex.com/my-apps/new and once the Integration is created, you should be able to find the these ClientId or, ClientSecret values there.
Next, while you're trying to generate the fresh Access Token - the Grant Type can never be "client credentials".
It must be set to "authorization_code". It's documented here as well - https://developer.webex.com/docs/integrations#getting-an-access-token
And for the "Scopes", I'd say it'd be good if you could at least keep the scope value as "spark:all" there.
Also, the Access Token URL is also not correct, it should be - https://webexapis.com/v1/access_token
I believe this Portal has been implemented following the POSTMAN Auth Type "OAuth 2.0" mechanism and that's why I'm sharing the Blog post we prepared for what value you should provide for which fields.
You can review this Blog Post once - https://developer.webex.com/blog/generating-an-oauth-token-pair-using-a-webex-integration
Hope this helps!
But in case of any further queries, please feel free to reach out to us.
Kind regards!
Sandip
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