I am not able to create the OAuth Authentication Scheme. In the siteminder admin UI, the OAuth template is not shown in the Authentication Scheme Type list. I am using R12.8 policy server. This auth scheme was present in our 12.5 environment.
Release: MSPSSO99000-12.8-Single Sign-On-for Business Users-MSP
The OAuth Authentication Scheme has been replaced with OAuth Partnership Federation in later releases. Instead of creating an auth scheme, create an OAuth Client -> Authz Server Partnership.