You want to know what platforms Data Center Security's application data retrieval supported on.
At the current 6.7 release application data retrieval is only supported on Windows platforms and Redhat, Centos, Oracle and Suse versions of linux. On other platforms the button will be greyed out. When an agent is registered with the management server, application data retrieval is automatically triggered once. You can trigger automatic data retrieval from the assets page of UMC, using the Discover Application button.