We are configuring a new OAuth Authentication Scheme, and we see there are three FCC forms provided:
What's the difference between them?
These FCC forms provided are sample forms to help you to construct your own FCC forms. The oauth.fcc form includes a OAuth Provider selector where you can specify some different OAuth AS to authenticate, while the oauth-single.fcc is another sample to show how to set a FCC form using only one single OAuth Provider, and therefore the user does not have to select anyone.
The oauthcb.fcc is used to process the querystring returned during the flow of the authentication process, and it is defined as the registered Application URL.
Configure an OAuth Authentication Scheme