modules/supplier/back/models/supplier.js

@@ -17,13 +17,17 @@ module.exports = Self => {
         message: 'The social name cannot be empty'
     });
 
+    if (this.city) {
         Self.validatesPresenceOf('city', {
             message: 'City cannot be empty'
         });
+    }
 
+    if (this.nif) {
         Self.validatesPresenceOf('nif', {
             message: 'The nif cannot be empty'
         });
+    }
 
     Self.validatesUniquenessOf('nif', {
         message: 'TIN must be unique'