Can't add Zoho learn custom portal get users OAuth Scope

Can't add Zoho learn custom portal get users OAuth Scope

Hey
I'm trying to create a connection from my CRM to Zoho Learn and use it to get the users of a custom portal in zoho learn.
The OAuth scope required in the zoho learn api documentation https://www.zoho.com/learn/api/get-custom-portal-users.html doens't exist in my crm -> zoholearn connection scopes.
I've tried to add all the scopes that are available and still I get INVALID_OAUTHSCOPE.
How can I add the scope to my connection.

    Nederlandse Hulpbronnen