diff --git a/db/changes/225001/00-supplier_beforeUpdate.sql b/db/changes/225001/00-supplier_beforeUpdate.sql
index 08af8666b..e87415659 100644
--- a/db/changes/225001/00-supplier_beforeUpdate.sql
+++ b/db/changes/225001/00-supplier_beforeUpdate.sql
@@ -44,3 +44,6 @@ BEGIN
 
 END$$
 DELIMITER ;
+
+INSERT INTO `util`.`notification` (`id`, `name`,`description`)
+    VALUES (3, 'supplier-pay-method-update', 'A supplier pay method has been updated');
diff --git a/modules/supplier/back/models/specs/supplier.spec.js b/modules/supplier/back/models/specs/supplier.spec.js
index 3140981c3..effb70e35 100644
--- a/modules/supplier/back/models/specs/supplier.spec.js
+++ b/modules/supplier/back/models/specs/supplier.spec.js
@@ -2,13 +2,7 @@ const models = require('vn-loopback/server/server').models;
 const LoopBackContext = require('loopback-context');
 
 describe('loopback model Supplier', () => {
-    let supplierOne;
-    let supplierTwo;
-
     beforeAll(async() => {
-        supplierOne = await models.Supplier.findById(1);
-        supplierTwo = await models.Supplier.findById(442);
-
         const activeCtx = {
             accessToken: {userId: 9},
             http: {
@@ -23,71 +17,112 @@ describe('loopback model Supplier', () => {
         });
     });
 
-    afterAll(async() => {
-        await supplierOne.updateAttribute('payMethodFk', supplierOne.payMethodFk);
-        await supplierTwo.updateAttribute('payMethodFk', supplierTwo.payMethodFk);
-    });
-
     describe('payMethodFk', () => {
         it('should throw an error when attempting to set an invalid payMethod id in the supplier', async() => {
-            let error;
-            const expectedError = 'You can not select this payment method without a registered bankery account';
-            const supplier = await models.Supplier.findById(1);
+            const tx = await models.Supplier.beginTransaction({});
+            const options = {transaction: tx};
 
-            await supplier.updateAttribute('payMethodFk', 8)
-                .catch(e => {
-                    error = e;
+            try {
+                let error;
+                const expectedError = 'You can not select this payment method without a registered bankery account';
+                const supplier = await models.Supplier.findOne({where: {id: 1}}, options);
 
-                    expect(error.message).toContain(expectedError);
-                });
+                await supplier.updateAttribute('payMethodFk', 8, options)
+                    .catch(e => {
+                        error = e;
 
-            expect(error).toBeDefined();
+                        expect(error.message).toContain(expectedError);
+                    });
+
+                expect(error).toBeDefined();
+                await tx.rollback();
+            } catch (e) {
+                await tx.rollback();
+                throw e;
+            }
         });
 
         it('should not throw if the payMethod id is valid', async() => {
-            let error;
-            const supplier = await models.Supplier.findById(442);
-            await supplier.updateAttribute('payMethodFk', 4)
-                .catch(e => {
-                    error = e;
-                });
+            const tx = await models.Supplier.beginTransaction({});
+            const options = {transaction: tx};
 
-            expect(error).not.toBeDefined();
+            try {
+                let error;
+                const supplier = await models.Supplier.findOne({where: {id: 442}}, options);
+                await supplier.updateAttribute('payMethodFk', 4, options)
+                    .catch(e => {
+                        error = e;
+                    });
+
+                expect(error).not.toBeDefined();
+                await tx.rollback();
+            } catch (e) {
+                await tx.rollback();
+                throw e;
+            }
         });
 
         it('should have checked isPayMethodChecked for payMethod hasVerfified is false', async() => {
-            const supplier = await models.Supplier.findById(442);
-            await supplier.updateAttribute('isPayMethodChecked', true);
-            await supplier.updateAttribute('payMethodFk', 5);
+            const tx = await models.Supplier.beginTransaction({});
+            const options = {transaction: tx};
 
-            const result = await models.Supplier.findById(442);
+            try {
+                const supplier = await models.Supplier.findOne({where: {id: 442}}, options);
+                await supplier.updateAttribute('isPayMethodChecked', true, options);
+                await supplier.updateAttribute('payMethodFk', 5, options);
 
-            expect(result.isPayMethodChecked).toEqual(true);
+                const result = await models.Supplier.findOne({where: {id: 442}}, options);
+
+                expect(result.isPayMethodChecked).toEqual(true);
+                await tx.rollback();
+            } catch (e) {
+                await tx.rollback();
+                throw e;
+            }
         });
 
         it('should have unchecked isPayMethodChecked for payMethod hasVerfified is true', async() => {
-            const supplier = await models.Supplier.findById(442);
-            await supplier.updateAttribute('isPayMethodChecked', true);
-            await supplier.updateAttribute('payMethodFk', 2);
+            const tx = await models.Supplier.beginTransaction({});
+            const options = {transaction: tx};
 
-            const result = await models.Supplier.findById(442);
+            try {
+                const supplier = await models.Supplier.findOne({where: {id: 442}}, options);
+                await supplier.updateAttribute('isPayMethodChecked', true, options);
+                await supplier.updateAttribute('payMethodFk', 2, options);
 
-            expect(result.isPayMethodChecked).toEqual(false);
+                const result = await models.Supplier.findOne({where: {id: 442}}, options);
+
+                expect(result.isPayMethodChecked).toEqual(false);
+                await tx.rollback();
+            } catch (e) {
+                await tx.rollback();
+                throw e;
+            }
         });
 
         it('should have unchecked isPayMethodChecked for payDay and peyDemFk', async() => {
-            const supplier = await models.Supplier.findById(442);
+            const tx = await models.Supplier.beginTransaction({});
+            const options = {transaction: tx};
 
-            await supplier.updateAttribute('isPayMethodChecked', true);
-            await supplier.updateAttribute('payDay', 5);
-            const firstResult = await models.Supplier.findById(442);
+            try {
+                const supplier = await models.Supplier.findOne({where: {id: 442}}, options);
+                await supplier.updateAttribute('payMethodFk', 2, options);
 
-            await supplier.updateAttribute('isPayMethodChecked', true);
-            await supplier.updateAttribute('payDemFk', 1);
-            const secondResult = await models.Supplier.findById(442);
+                await supplier.updateAttribute('isPayMethodChecked', true, options);
+                await supplier.updateAttribute('payDay', 5, options);
+                const firstResult = await models.Supplier.findOne({where: {id: 442}}, options);
 
-            expect(firstResult.isPayMethodChecked).toEqual(false);
-            expect(secondResult.isPayMethodChecked).toEqual(false);
+                await supplier.updateAttribute('isPayMethodChecked', true, options);
+                await supplier.updateAttribute('payDemFk', 1, options);
+                const secondResult = await models.Supplier.findOne({where: {id: 442}}, options);
+
+                expect(firstResult.isPayMethodChecked).toEqual(false);
+                expect(secondResult.isPayMethodChecked).toEqual(false);
+                await tx.rollback();
+            } catch (e) {
+                await tx.rollback();
+                throw e;
+            }
         });
     });
 });