This KB Provides the steps to enable API Key features in SaaS Clarity
Release : Clarity 15.7 and higher
Component : CA PPM SAAS APPLICATION
(Change will require a 30 minute to 1 hour estimated outage)
2. As referenced at: REST API: Define Clients and Generate Keys for Integrations with Clarity, you do not need to open a support ticket to enable the API Keys feature if your environment is hosted on the Google Cloud Platform.