The following warning message is displayed.
“Selected product listing file: Veritas_SSR.pl.xml is signed with trusted but non-Symantec certificate”.

The warning message is displayed because Veritas_SSR.pl.xml is not a signed Symantec Certificate but signed with a legal Veritas Signature that is a non-Symantec Certificate.
Veritas recommends that you accept this warning and continue with the installation.