diff --git a/db/routines/vn/functions/buy_getLastWithoutInventory.sql b/db/routines/vn/functions/buy_getLastWithoutInventory.sql
new file mode 100644
index 000000000..ac19fe416
--- /dev/null
+++ b/db/routines/vn/functions/buy_getLastWithoutInventory.sql
@@ -0,0 +1,32 @@
+DELIMITER $$
+CREATE OR REPLACE DEFINER=`vn`@`localhost` FUNCTION `vn`.`buy_getLastWithoutInventory`(
+	vItemFk INT,
+	vWarehouseFk INT
+)
+	RETURNS int(11)
+	DETERMINISTIC
+BEGIN
+/**
+ * Retorna la última compra que no sea inventario.
+ *
+ * @param vItemFk Id del artículo
+ * @param vWarehouseFk Id del almacén
+ * @return Id de compra
+ */
+	DECLARE vBuyFk INT;
+
+	SELECT b.id INTO vBuyFk
+		FROM buy b
+			JOIN entry e ON e.id = b.entryFk
+			JOIN travel t ON t.id = e.travelFk
+		WHERE e.id <> (SELECT defaultEntry FROM entryConfig)
+			AND e.supplierFk <> (SELECT supplierFk FROM inventoryConfig)
+			AND e.typeFk <> 'inventory'
+			AND b.itemFk = vItemFk
+			AND (t.warehouseInFk = vWarehouseFk OR t.warehouseInFk IS NULL)
+		ORDER BY ABS(DATEDIFF(util.VN_CURDATE(), t.landed)), e.created DESC
+		LIMIT 1;
+
+	RETURN vBuyFk;
+END$$
+DELIMITER ;