diff --git a/db/routines/vn/procedures/itemShelvingSale_addByCollection.sql b/db/routines/vn/procedures/itemShelvingSale_addByCollection.sql
index 4e57fed0b3..9bc5492355 100644
--- a/db/routines/vn/procedures/itemShelvingSale_addByCollection.sql
+++ b/db/routines/vn/procedures/itemShelvingSale_addByCollection.sql
@@ -5,7 +5,7 @@ CREATE OR REPLACE DEFINER=`root`@`localhost` PROCEDURE `vn`.`itemShelvingSale_ad
 )
 BEGIN
 /**
- * Guarda la ubicación para el contenido de una colección
+ * Reserva cantidades con ubicaciones para el contenido de una colección
  *
  * @param vCollectionFk Identificador de collection
  */
diff --git a/db/routines/vn/triggers/itemShelving_AFTER_INSERT.sql b/db/routines/vn/triggers/itemShelving_AFTER_INSERT.sql
deleted file mode 100644
index 784a736ec8..0000000000
--- a/db/routines/vn/triggers/itemShelving_AFTER_INSERT.sql
+++ /dev/null
@@ -1,27 +0,0 @@
-DELIMITER $$
-CREATE OR REPLACE DEFINER=`root`@`localhost` TRIGGER `vn`.`itemShelving_AFTER_INSERT`
-	AFTER INSERT ON `itemShelving`
-	FOR EACH ROW
-BEGIN 	
-	
-	INSERT INTO vn.itemShelvingLog(	
-			itemShelvingFk,
-			workerFk,
-			accion,
-			itemFk,
-			shelvingFk,
-			visible,
-			`grouping`,
-			packing,
-			available)
-		VALUES( NEW.id,
-			NEW.userFk,
-			'CREA REGISTRO',
-			NEW.itemFk,
-			NEW.shelvingFk,
-			NEW.visible,
-			NEW.`grouping`,
-			NEW.packing,
-			NEW.available); 
-END$$
-DELIMITER ;
\ No newline at end of file
diff --git a/db/routines/vn/triggers/itemShelving_AFTER_UPDATE.sql b/db/routines/vn/triggers/itemShelving_AFTER_UPDATE.sql
deleted file mode 100644
index 23ea14e85b..0000000000
--- a/db/routines/vn/triggers/itemShelving_AFTER_UPDATE.sql
+++ /dev/null
@@ -1,16 +0,0 @@
-DELIMITER $$
-CREATE OR REPLACE DEFINER=`root`@`localhost` TRIGGER `vn`.`itemShelving_AFTER_UPDATE`
-	AFTER UPDATE ON `itemShelving`
-	FOR EACH ROW
-BEGIN 
-	INSERT INTO itemShelvingLog
-		SET itemShelvingFk = NEW.id,
-			workerFk = account.myUser_getId(),
-			accion = 'CAMBIO',
-			itemFk = NEW.itemFk,
-			shelvingFk = NEW.shelvingFk,
-			visible = NEW.visible,
-			`grouping` = NEW.`grouping`,
-			packing = NEW.packing; 
-END$$
-DELIMITER ;
\ No newline at end of file
diff --git a/db/routines/vn/triggers/itemShelving_BEFORE_INSERT.sql b/db/routines/vn/triggers/itemShelving_BEFORE_INSERT.sql
deleted file mode 100644
index 0bed738d24..0000000000
--- a/db/routines/vn/triggers/itemShelving_BEFORE_INSERT.sql
+++ /dev/null
@@ -1,10 +0,0 @@
-DELIMITER $$
-CREATE OR REPLACE DEFINER=`root`@`localhost` TRIGGER `vn`.`itemShelving_BEFORE_INSERT`
-	BEFORE INSERT ON `itemShelving`
-	FOR EACH ROW
-BEGIN
-	SET NEW.editorFk = account.myUser_getId();
-	SET NEW.userFk = account.myUser_getId();
-	SET NEW.available = NEW.visible;
-END$$
-DELIMITER ;
diff --git a/db/routines/vn/triggers/itemShelving_afterInsert.sql b/db/routines/vn/triggers/itemShelving_afterInsert.sql
index 5c0cb38530..1408615c32 100644
--- a/db/routines/vn/triggers/itemShelving_afterInsert.sql
+++ b/db/routines/vn/triggers/itemShelving_afterInsert.sql
@@ -1,22 +1,27 @@
 DELIMITER $$
-CREATE OR REPLACE DEFINER=`root`@`localhost` TRIGGER `vn`.`itemShelving_afterInsert`
+CREATE OR REPLACE DEFINER=`root`@`localhost` TRIGGER `vn`.`itemShelving_AFTER_INSERT`
 	AFTER INSERT ON `itemShelving`
 	FOR EACH ROW
-INSERT INTO vn.itemShelvingLog(	itemShelvingFk,
-								workerFk,
-								accion,
-								itemFk,
-								shelvingFk,
-								visible,
-								`grouping`,
-								packing)
-	VALUES( NEW.id,
+BEGIN 	
+	
+			INSERT INTO vn.itemShelvingLog(	
+			itemShelvingFk,
+			workerFk,
+			accion,
+			itemFk,
+			shelvingFk,
+			visible,
+			`grouping`,
+			packing,
+			available)
+		VALUES( NEW.id,
 			NEW.userFk,
 			'CREA REGISTRO',
 			NEW.itemFk,
 			NEW.shelvingFk,
 			NEW.visible,
 			NEW.`grouping`,
-			NEW.packing
-			)$$
-DELIMITER ;
+			NEW.packing,
+			NEW.available);
+END$$
+DELIMITER ;
\ No newline at end of file
diff --git a/db/routines/vn/triggers/itemShelving_afterUpdate.sql b/db/routines/vn/triggers/itemShelving_afterUpdate.sql
index 107e8ecdc5..1d7dc4ac64 100644
--- a/db/routines/vn/triggers/itemShelving_afterUpdate.sql
+++ b/db/routines/vn/triggers/itemShelving_afterUpdate.sql
@@ -1,8 +1,9 @@
 DELIMITER $$
-CREATE OR REPLACE DEFINER=`root`@`localhost` TRIGGER `vn`.`itemShelving_afterUpdate`
+CREATE OR REPLACE DEFINER=`root`@`localhost` TRIGGER `vn`.`itemShelving_AFTER_UPDATE`
 	AFTER UPDATE ON `itemShelving`
 	FOR EACH ROW
-INSERT INTO itemShelvingLog
+BEGIN 
+	INSERT INTO itemShelvingLog
 		SET itemShelvingFk = NEW.id,
 			workerFk = account.myUser_getId(),
 			accion = 'CAMBIO',
@@ -10,5 +11,8 @@ INSERT INTO itemShelvingLog
 			shelvingFk = NEW.shelvingFk,
 			visible = NEW.visible,
 			`grouping` = NEW.`grouping`,
-			packing = NEW.packing$$
+			packing = NEW.packing,
+			available = NEW.available; 
+
+END$$
 DELIMITER ;
diff --git a/db/routines/vn/triggers/itemShelving_beforeInsert.sql b/db/routines/vn/triggers/itemShelving_beforeInsert.sql
index 011cf37014..e9fe17cf21 100644
--- a/db/routines/vn/triggers/itemShelving_beforeInsert.sql
+++ b/db/routines/vn/triggers/itemShelving_beforeInsert.sql
@@ -5,6 +5,7 @@ CREATE OR REPLACE DEFINER=`root`@`localhost` TRIGGER `vn`.`itemShelving_beforeIn
 BEGIN
 	SET NEW.editorFk = account.myUser_getId();
 	SET NEW.userFk = account.myUser_getId();
+	SET NEW.available = NEW.visible;
 
 END$$
 DELIMITER ;
diff --git a/db/routines/vn/triggers/itemShelving_beforeUpdate.sql b/db/routines/vn/triggers/itemShelving_beforeUpdate.sql
index 6fd919d2e4..214c64b452 100644
--- a/db/routines/vn/triggers/itemShelving_beforeUpdate.sql
+++ b/db/routines/vn/triggers/itemShelving_beforeUpdate.sql
@@ -3,9 +3,15 @@ CREATE OR REPLACE DEFINER=`root`@`localhost` TRIGGER `vn`.`itemShelving_beforeUp
 	BEFORE UPDATE ON `itemShelving`
 	FOR EACH ROW
 BEGIN
+
 	SET NEW.editorFk = account.myUser_getId();
 	IF NEW.userFk IS NULL THEN
 		SET NEW.userFk = account.myUser_getId();
 	END IF;
+
+	IF (NEW.visible <> OLD.visible) THEN
+		SET NEW.available = GREATEST(NEW.available + NEW.visible - OLD.visible, 0);
+	END IF;
+
 END$$
 DELIMITER ;