Following the setup guide for Unified Agent for "Example Installations and Uninstallation"
https://support.symantec.com/content/unifiedweb/en_US/article.DOC10695.html
Shows a command of:
bcuaXX-setup.msi /qr CM_URL=https://mysg.example.com:8084 REINSTALL=ALL REINSTALLMODE=vamus FORCEREBOOT=no"
When testing this with a new installation you see error:
Installer Information: The File 'bcua_service.exe' is not marked for installation.
Remove the "REINSTALL" and "REINSTALLMODE" parameters from the example and test.
See below for a new sample command:
bcuaXX-setup.msi /qr CM_URL=https://mysg.example.com:8084