diff --git a/xCAT-server/lib/xcat/plugins/sinv.pm b/xCAT-server/lib/xcat/plugins/sinv.pm
index 9e6dedb20..7b189ce25 100644
--- a/xCAT-server/lib/xcat/plugins/sinv.pm
+++ b/xCAT-server/lib/xcat/plugins/sinv.pm
@@ -51,7 +51,7 @@ sub handled_commands
 #     $::CALLBACK = $cb;
 #    my %sn;
 #    my $sn;
-#    if ($req->{_xcatdest}) { return [$req]; }    #exit if preprocessed
+#    if ($req->{_xcatpreprocessed}->[0] == 1) { return [$req]; }
 #    my $nodes    = $req->{node};
 #    my $service  = "xcat";
 #    my @requests;
@@ -95,6 +95,7 @@ sub handled_commands
 #            my $reqcopy = {%$req};
 #            $reqcopy->{node} = $sn->{$snkey};
 #            $reqcopy->{'_xcatdest'} = $snkey;
+#            $reqcopy->{_xcatpreprocessed}->[0] = 1
 #            push @requests, $reqcopy;
 #
 #    }