When you try to upgrade a Data Center Security: Server Advanced agent that is installed on a Solaris 11 computer to a new version, the upgrade fails and displays the following error message:
ERROR: SYMCsdcss is already installed at /. Duplicate installation attempted at /opt/Symantec.
Uninstall the existing agent from the Solaris 11 computer and install the new agent.
Instructions for installing and uninstalling agents are provided in the Data Center Security: Server Advanced Planning and Deployment Guide.