Can multiple Service Catalog systems be configured to use the same CA PAM system?
A CA PAM system needs to be able to communicate with the Service Catalog system to update requests etc. The connection details for the Service Catalog system are stored in a CA PAM dataset. This can only contain the details of one system, so CA PAM can only communicate with one Service Catalog system. This means that it's not possible for multiple Service Catalog systems to use the same CA PAM system because only one of the Service catalog systems would see any updates from CA PAM.