diff --git a/back/methods/machine-worker/specs/updateInTime.spec.js b/back/methods/machine-worker/specs/updateInTime.spec.js
index 51fadb6a2..ecb30b90b 100644
--- a/back/methods/machine-worker/specs/updateInTime.spec.js
+++ b/back/methods/machine-worker/specs/updateInTime.spec.js
@@ -1,56 +1,132 @@
 const {models} = require('vn-loopback/server/server');
-const LoopBackContext = require('loopback-context');
 
-// #6276
-xdescribe('ItemShelving upsertItem()', () => {
-    const warehouseFk = 1;
-    let ctx;
-    let options;
-    let tx;
+describe('machineWorker updateInTime()', () => {
+    const itBoss = 104;
+    const davidCharles = 1106;
 
-    beforeEach(async() => {
+    beforeAll(async() => {
         ctx = {
             req: {
-                accessToken: {userId: 9},
-                headers: {origin: 'http://localhost'}
-            },
-            args: {}
+                accessToken: {},
+                headers: {origin: 'http://localhost'},
+                __: value => value
+            }
         };
+    });
 
-        spyOn(LoopBackContext, 'getCurrentContext').and.returnValue({
-            active: ctx.req
+    it('should throw an error if the plate does not exist', async() => {
+        const tx = await models.MachineWorker.beginTransaction({});
+        const options = {transaction: tx};
+        const plate = 'RE-123';
+        ctx.req.accessToken.userId = 1106;
+        try {
+            await models.MachineWorker.updateInTime(ctx, plate, options);
+            await tx.rollback();
+        } catch (e) {
+            const error = e;
+
+            expect(error.message).toContain('the plate does not exist');
+            await tx.rollback();
+        }
+    });
+
+    it('should grab a machine where is not in use', async() => {
+        const tx = await models.MachineWorker.beginTransaction({});
+        const options = {transaction: tx};
+        const plate = 'RE-003';
+        ctx.req.accessToken.userId = 1107;
+        try {
+            const totalBefore = await models.MachineWorker.find(null, options);
+            await models.MachineWorker.updateInTime(ctx, plate, options);
+            const totalAfter = await models.MachineWorker.find(null, options);
+
+            expect(totalAfter.length).toEqual(totalBefore.length + 1);
+            await tx.rollback();
+        } catch (e) {
+            await tx.rollback();
+        }
+    });
+
+    describe('less than 12h', () => {
+        const plate = 'RE-001';
+        it('should trow an error if it is not himself', async() => {
+            const tx = await models.MachineWorker.beginTransaction({});
+            const options = {transaction: tx};
+            ctx.req.accessToken.userId = davidCharles;
+
+            try {
+                await models.MachineWorker.updateInTime(ctx, plate, options);
+                await tx.rollback();
+            } catch (e) {
+                const error = e;
+
+                expect(error.message).toContain('This machine is already in use');
+                await tx.rollback();
+            }
         });
 
-        options = {transaction: tx};
-        tx = await models.ItemShelving.beginTransaction({});
-        options.transaction = tx;
+        it('should throw an error if it is himself with a different machine', async() => {
+            const tx = await models.MachineWorker.beginTransaction({});
+            const options = {transaction: tx};
+            ctx.req.accessToken.userId = itBoss;
+            const plate = 'RE-003';
+            try {
+                await models.MachineWorker.updateInTime(ctx, plate, options);
+                await tx.rollback();
+            } catch (e) {
+                const error = e;
+
+                expect(error.message).toEqual('You are already using a machine');
+                await tx.rollback();
+            }
+        });
+
+        it('should set the out time if it is himself', async() => {
+            const tx = await models.MachineWorker.beginTransaction({});
+            const options = {transaction: tx};
+            ctx.req.accessToken.userId = itBoss;
+
+            try {
+                const isNotParked = await models.MachineWorker.findOne({
+                    where: {workerFk: itBoss}
+                }, options);
+                await models.MachineWorker.updateInTime(ctx, plate, options);
+                const isParked = await models.MachineWorker.findOne({
+                    where: {workerFk: itBoss}
+                }, options);
+
+                expect(isNotParked.outTime).toBeNull();
+                expect(isParked.outTime).toBeDefined();
+                await tx.rollback();
+            } catch (e) {
+                await tx.rollback();
+            }
+        });
     });
 
-    afterEach(async() => {
-        await tx.rollback();
-    });
+    describe('equal or more than 12h', () => {
+        const plate = 'RE-002';
+        it('should set the out time and grab the machine', async() => {
+            const tx = await models.MachineWorker.beginTransaction({});
+            const options = {transaction: tx};
+            ctx.req.accessToken.userId = davidCharles;
+            const filter = {
+                where: {workerFk: davidCharles, machineFk: 2}
+            };
+            try {
+                const isNotParked = await models.MachineWorker.findOne(filter, options);
+                const totalBefore = await models.MachineWorker.find(null, options);
+                await models.MachineWorker.updateInTime(ctx, plate, options);
+                const isParked = await models.MachineWorker.findOne(filter, options);
+                const totalAfter = await models.MachineWorker.find(null, options);
 
-    it('should add two new records', async() => {
-        const shelvingFk = 'ZPP';
-        const items = [1, 1, 1, 2];
-
-        await models.ItemShelving.upsertItem(ctx, shelvingFk, items, warehouseFk, options);
-        const itemShelvings = await models.ItemShelving.find({where: {shelvingFk}}, options);
-
-        expect(itemShelvings.length).toEqual(2);
-    });
-
-    it('should update the visible items', async() => {
-        const shelvingFk = 'GVC';
-        const items = [2, 2];
-        const {visible: itemsBefore} = await models.ItemShelving.findOne({
-            where: {shelvingFk, itemFk: items[0]}
-        }, options);
-        await models.ItemShelving.upsertItem(ctx, shelvingFk, items, warehouseFk, options);
-        const {visible: itemsAfter} = await models.ItemShelving.findOne({
-            where: {shelvingFk, itemFk: items[0]}
-        }, options);
-
-        expect(itemsAfter).toEqual(itemsBefore + 2);
+                expect(isNotParked.outTime).toBeNull();
+                expect(isParked.outTime).toBeDefined();
+                expect(totalAfter.length).toEqual(totalBefore.length);
+                await tx.rollback();
+            } catch (e) {
+                await tx.rollback();
+            }
+        });
     });
 });
diff --git a/db/routines/vn/procedures/itemShelving_add.sql b/db/routines/vn/procedures/itemShelving_add.sql
index 2a4676b50..155b95cb5 100644
--- a/db/routines/vn/procedures/itemShelving_add.sql
+++ b/db/routines/vn/procedures/itemShelving_add.sql
@@ -20,9 +20,9 @@ BEGIN
 
 	SELECT barcodeToItem(vBarcode) INTO vItemFk;
 	
-	SET vPacking = COALESCE(vPacking, GREATEST(vn.itemPacking(vBarcode,vWarehouseFk), 1));
+	SELECT COALESCE(vPacking, GREATEST(vn.itemPacking(vBarcode,vWarehouseFk), 1)) INTO vPacking;
 
-	SET vQuantity = vQuantity * vPacking;
+	SELECT vQuantity * vPacking INTO vQuantity;
 
 	IF (SELECT COUNT(*) FROM shelving WHERE code = vShelvingFk COLLATE utf8_unicode_ci) = 0 THEN
 
diff --git a/modules/item/back/methods/item-shelving/specs/upsertItem.spec.js b/modules/item/back/methods/item-shelving/specs/upsertItem.spec.js
index 51fadb6a2..a6e8efdf4 100644
--- a/modules/item/back/methods/item-shelving/specs/upsertItem.spec.js
+++ b/modules/item/back/methods/item-shelving/specs/upsertItem.spec.js
@@ -2,7 +2,7 @@ const {models} = require('vn-loopback/server/server');
 const LoopBackContext = require('loopback-context');
 
 // #6276
-xdescribe('ItemShelving upsertItem()', () => {
+describe('ItemShelving upsertItem()', () => {
     const warehouseFk = 1;
     let ctx;
     let options;