The necessary package xntp has not been installed error during Administration Console or IDP installation on SLES

When installing the Administration Console or IDP on SLES, the installer exits with the following error message:

"The necessary package xntp has not been installed.  Novell Access Manager requires
the tools provided by xntp for necessary time synchronization.  Please install NTP
tools and run this installer again.
Terminating Installation.
"

Make sure you have NTP enabled and configured properly. If you do, try the step in resolution section below.

In the $novell-access-manager-x.x.x.x-xxx/scripts/pre_install.sh file:

Comment out lines 183 and 184
#NTPQ_CMD="`which ntpq 2>/dev/null`"
#NTPDATE_CMD="`which ntpdate 2>/dev/null`"

Comment out block lines 189-196
#if [ -z "$NTPQ_CMD" -o -z "$NTPDATE_CMD" -o -z "$NTPDAEMON_CMD"]
#then
#       echo
#       echo_text "`gettext 'The necessary package xntp has not been installed.  Novell Access Manager requires the tools provided by xntp for necessary time synchronization.  Please install NTP tools and run this installer again.'`"
#       echo_text "`gettext 'Terminating Installation.'`"
#       echo
#       exit 1
#fi