+my $version= param('version');
+my $spec_aadepth= param('depth');
+if ($version ne '3' || $spec_aadepth ne $aadepth) {
+ print header('text/plain',
+ "403 YPP SC PCTB client is out of date".
+ " ($version, $spec_aadepth)");
+ print "\nYour YPP SC client is out of date.\n";
+ exit 0;
+}
+