When you install Symantec Data Center Security: Server Advanced agent build# 1391 (sdcss-6.7.2-1391.suse12.x86_64) on an SLES 12 SP3 computer, the agent installs the kmod package 133 (sdcss-kmod-6.7.2-133.suse12.x86_64) by default. Then you must manually upgrade the kmod package to package 146.
SLES12SP3:/etc/zypp/repos.d # zypper refresh Repository 'SLE-Module-Containers12-Pool' is up to date. Repository 'SLE-Module-Containers12-Updates' is up to date. Permission to access '<Symantec SDCSS repository address>' denied.
File 'repomd.xml' from repository 'SDCSS repository for package updates' is unsigned, continue? [yes/no]
zypper ref -f