I was looking for the list of REST API for my version.
I am on 15.6.1 and if I am reading the documentation correctly it states that the REST API cannot be used in Production or Federated SSO systems. Is that correct?
Release : 15.6.1 and lower
Component : CA PPM SAAS USERS, GROUPS, OBS ADMINISTRATION
This is correct, the REST APIs did not go in until version 15.7.0. Here is the link: