When QAS is installed on the Linux server being set up to be an SAP application server, the SAPINST installation process fails during the install.
This seems to be caused by interference in either the pam.conf or configuration in the nsswitch.conf. A similar issue has been reported when NIS is in use.
Unconfigure Quest Authentication Services temporarily.
/opt/quest/bin/vastool unconfigure pam
/opt/quest/bin/vastool unconfigure nss
Install SAP application server as normal.
Reconfigure Quest Authentication Services
/opt/quest/bin/vastool configure pam
/opt/quest/bin/vastool configure nss