diff --git a/db/routines/vn/procedures/itemShelvingSale_addBySale.sql b/db/routines/vn/procedures/itemShelvingSale_addBySale.sql
index aa50f0ed8..6625e89b8 100644
--- a/db/routines/vn/procedures/itemShelvingSale_addBySale.sql
+++ b/db/routines/vn/procedures/itemShelvingSale_addBySale.sql
@@ -48,6 +48,13 @@ proc: BEGIN
 			RESIGNAL;
 		END;
 	
+	START TRANSACTION;
+	
+	SELECT id INTO vSaleFk
+		FROM sale
+		WHERE id = vSaleFk 
+		FOR UPDATE;
+
 	SELECT MAX(p.pickingOrder), s.quantity - SUM(IFNULL(iss.quantity, 0)), s.quantity
 		INTO vLastPickingOrder, vOutStanding, vSaleQuantity
 		FROM sale s
@@ -57,7 +64,8 @@ proc: BEGIN
 			LEFT JOIN parking p ON p.id = sh.parkingFk
 		WHERE s.id = vSaleFk;
 		
-	IF vOutStanding <= 0 THEN 
+	IF vOutStanding <= 0 THEN
+		COMMIT;
 		LEAVE proc;
 	END IF;
 
@@ -84,10 +92,8 @@ proc: BEGIN
 			END IF;
 			LEAVE l;
 		END IF;
-
-		START TRANSACTION;
-
-		SELECT id INTO vItemShelvingFk 
+	
+	SELECT id INTO vItemShelvingFk 
 			FROM itemShelving 
 			WHERE id = vItemShelvingFk 
 			FOR UPDATE;
@@ -115,9 +121,8 @@ proc: BEGIN
 				WHERE id = vItemShelvingFk;
 
 		END IF;
-
-		COMMIT;	
 	END LOOP;
 	CLOSE vItemShelvingAvailable;
+	COMMIT;
 END$$
 DELIMITER ;
\ No newline at end of file