Index: /trunk/ippScripts/scripts/diff_skycell.pl
===================================================================
--- /trunk/ippScripts/scripts/diff_skycell.pl	(revision 13116)
+++ /trunk/ippScripts/scripts/diff_skycell.pl	(revision 13117)
@@ -83,4 +83,5 @@
 my $input;			# Input file
 my $template;			# Template file
+my $tess_id;			# Tesselation identifier
 my $skycell_id;			# Skycell identifier
 my $camera;			# Camera
@@ -91,4 +92,10 @@
     } else {
 	$input = $uri;
+    }
+    if (defined $tess_id) {
+	&my_die("Tesselation identifiers don't match", $diff_id, $PS_EXIT_SYS_ERROR) unless
+	    $file->{tess_id} eq $tess_id;
+    } else {
+	$tess_id = $file->{tess_id};
     }
     if (defined $skycell_id) {