db/routines/vn/procedures/itemShelving_addList.sql

@@ -39,7 +39,7 @@ BEGIN
 		UPDATE vn.itemShelving
 			SET isChecked = vIsChecked
 			WHERE shelvingFk COLLATE utf8_unicode_ci = vShelvingFk
-				AND itemFk = vItemFk;
+				AND itemFk = vItemFk AND isChecked IS NULL;
 
 		SET vCounter = vCounter + 1;
 	END WHILE;