Index: trunk/ippTools/share/pxadmin_create_tables.sql
===================================================================
--- trunk/ippTools/share/pxadmin_create_tables.sql	(revision 24730)
+++ trunk/ippTools/share/pxadmin_create_tables.sql	(revision 24740)
@@ -1284,5 +1284,6 @@
     PRIMARY KEY(int_id),
     FOREIGN KEY(dest_id) REFERENCES rcDestination(dest_id),
-    FOREIGN KEY(target_id) REFERENCES distTarget(target_id)
+    FOREIGN KEY(target_id) REFERENCES distTarget(target_id),
+    CONSTRAINT UNIQUE (dest_id, target_id)
 )  ENGINE=innodb DEFAULT CHARSET=latin1;