diff --git a/README.md b/README.md
index da51fe093..32377c115 100644
--- a/README.md
+++ b/README.md
@@ -8,7 +8,9 @@ Salix is also the scientific name of a beautifull tree! :)
 
 Required applications.
 
-* Node.js = 14.15.1 LTS
+* Node.js = 14.x LTS
+* Docker
+* Git
 * Docker
 
 You will need to install globally the following items.
diff --git a/modules/supplier/back/models/specs/supplier-account.spec.js b/modules/supplier/back/models/specs/supplier-account.spec.js
index 438b87f8c..f56e70a89 100644
--- a/modules/supplier/back/models/specs/supplier-account.spec.js
+++ b/modules/supplier/back/models/specs/supplier-account.spec.js
@@ -9,19 +9,18 @@ describe('loopback model Supplier-account', () => {
             let error;
             const expectedError = 'The IBAN does not have the correct format';
             const iban = 'incorrect format';
-            // si falla el error es extraño preguntar a carlos
-
-            await app.models.SupplierAccount.create(
-                {
-                    supplierFk: supplierId,
-                    bankEntityFk: bankEntityId,
-                    iban: iban
-                }
-            ).catch(e => {
+            try {
+                await app.models.SupplierAccount.create(
+                    {
+                        supplierFk: supplierId,
+                        bankEntityFk: bankEntityId,
+                        iban: iban
+                    });
+            } catch (e) {
                 error = e;
 
                 expect(error.message).toContain(expectedError);
-            });
+            }
 
             expect(error).toBeDefined();
         });
@@ -47,13 +46,12 @@ describe('loopback model Supplier-account', () => {
                 spyOn(LoopBackContext, 'getCurrentContext').and.returnValue({
                     active: activeCtx
                 });
-                const createdSupplierAccount = await app.models.SupplierAccount.create(
-                    {
-                        supplierFk: supplierId,
-                        bankEntityFk: bankEntityId,
-                        iban: iban
-                    }
-                    , options);
+                const createdSupplierAccount = await app.models.SupplierAccount.create({
+                    supplierFk: supplierId,
+                    bankEntityFk: bankEntityId,
+                    iban: iban
+                },
+                options);
 
                 expect(createdSupplierAccount.iban).toBe(iban);
                 await tx.rollback();
diff --git a/modules/supplier/back/models/supplier-account.js b/modules/supplier/back/models/supplier-account.js
index 9d6f10e3c..85bf37510 100644
--- a/modules/supplier/back/models/supplier-account.js
+++ b/modules/supplier/back/models/supplier-account.js
@@ -1,11 +1,11 @@
 const validateIban = require('vn-loopback/util/validateIban');
 
 module.exports = Self => {
-    Self.validateAsync('iban', ibanNeedsValidation, {
+    Self.validateAsync('iban', ibanValidation, {
         message: 'The IBAN does not have the correct format'
     });
 
-    async function ibanNeedsValidation(err, done) {
+    async function ibanValidation(err, done) {
         let filter = {
             fields: ['code'],
             where: {id: this.countryFk}