Are the two filesystems defined within the installation of Common Services v15 required to run Common Services or are they for installation only?
CA COMMON SERVICES FOR z/OS 14.1 & 15.0 - z/OS supported releases -
Those files systems are for the USS based products: J2Z and TOMCAT.
These files are NOT shared accross a SYSPLEX but they can be deployed on other lpars.
According to this documentation at the url:
Using those components, there are jobs to deploy copies for run-time purposes.