diff --git a/db/routines/vn/procedures/sale_setProblemRoundingByBuy.sql b/db/routines/vn/procedures/sale_setProblemRoundingByBuy.sql
new file mode 100644
index 000000000..a1362c222
--- /dev/null
+++ b/db/routines/vn/procedures/sale_setProblemRoundingByBuy.sql
@@ -0,0 +1,73 @@
+DELIMITER $$
+CREATE OR REPLACE DEFINER=`root`@`localhost` PROCEDURE `vn`.`sale_setProblemRoundingByBuy`(
+	vBuyFk INT
+)
+BEGIN
+/**
+ * Update rounding problem for all sales related to a buy.
+ *
+ * @param vBuyFk Buy id
+ */
+	DECLARE vItemFk INT;
+	DECLARE vWareHouseFk INT;
+	DECLARE vMaxDated DATE;
+	DECLARE vMinDated DATE;
+	DECLARE vLanding DATE;
+	DECLARE vLastBuy INT;
+	DECLARE vCurrentBuy INT;
+	DECLARE vGrouping INT;
+
+	SELECT b.itemFk, t.warehouseInFk
+			INTO vItemFk, vWareHouseFk
+		FROM buy b 
+			JOIN entry e ON e.id = b.entryFk
+			JOIN travel t ON t.id = e.travelFk
+		WHERE b.id = vBuyFk;
+	
+	SELECT DATE(MAX(t.shipped)) + INTERVAL 1 DAY, DATE(MIN(t.shipped))
+			INTO vMaxDated, vMinDated 
+		FROM sale s 
+			JOIN ticket t ON t.id = s.ticketFk 
+		WHERE t.shipped >= util.VN_CURDATE()
+			AND s.itemFk = vItemFk
+			AND s.quantity > 0;
+	
+	CALL buy_getUltimate(vItemFk, vWareHouseFk, vMinDated);
+
+	SELECT bu.buyFk, b.grouping INTO vLastBuy, vGrouping
+		FROM tmp.buyUltimate bu
+			JOIN buy b ON b.id = bu.buyFk;
+		
+	DROP TEMPORARY TABLE tmp.buyUltimate;
+	
+	SET vLanding = vMaxDated;
+
+	WHILE vCurrentBuy <> vLastBuy OR vLanding > vMinDated DO
+		SET vMaxDated = vLanding - INTERVAL 1 DAY; 
+		
+		CALL buy_getUltimate(vItemFk, vWareHouseFk, vMaxDated);
+		
+		SELECT buyFk, landing
+				INTO vCurrentBuy, vLanding
+			FROM tmp.buyUltimate;
+		
+		DROP TEMPORARY TABLE tmp.buyUltimate;
+	END WHILE;
+
+	CREATE OR REPLACE TEMPORARY TABLE tmp.sale
+		(INDEX(saleFk, isProblemCalcNeeded))
+		ENGINE = MEMORY
+		SELECT s.id saleFk, 
+				MOD(s.quantity, vGrouping) hasProblem, 
+				ticket_isProblemCalcNeeded(t.id) isProblemCalcNeeded
+			FROM sale s 
+				JOIN ticket t ON t.id = s.ticketFk 
+			WHERE s.itemFk = vItemFk
+				AND s.quantity > 0
+				AND t.shipped BETWEEN vMinDated AND util.dayEnd(vMaxDated);
+
+	CALL sale_setProblem('hasRounding');
+
+	DROP TEMPORARY TABLE tmp.sale;
+END$$
+DELIMITER ;
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