Can I generate a Zoho Access token using ClientCredentials flow?

I have a "Cron Job" that runs every hour. It will update 1 (to many) Zoho CRM 'accounts'.

To do this, I need to use an access token in the 'Authentication' header. Now I can manually do this via the "api console" (https://api-console.zoho.com/) and manually generate a 10 minute token via that UI.

But this won't work if I have a background process running every hour.

That "Self Client" in that api-console does have the Client Id and Client Secret though! So I thought I could do this:

var url = $"https://accounts.zoho.com/oauth/v2/token?grant_type=client_credentials&client_id={_clientId}&client_secret={_clientSecret}&scope=ZohoCRM.modules.ALL";

which i thought was a tricky way to use the "client_credentials" oAuth flow.

When i tried this, I just got an error saying "missing_org_info" or something.

So is this possible? Otherwise, how do people have background jobs running and using the Zoho api?

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