private async Task<ResponseBool> SavePurchasingClerkCostCentre()
        {
            ResponseBool response = new ResponseBool {Success = false};
            using (var c = NestedContainer)
            {
                _proxy = Using<IDistributorServiceProxy>(c);

                Guid ccId = User._Status == EntityStatus.New ? Guid.NewGuid() : User.CostCentre;
                PurchasingClerk pClerk =
                    Using<CostCentreFactory>(c).CreateCostCentre(ccId, CostCentreType.PurchasingClerk,
                                                                 Using<ICostCentreRepository>(c).GetById(
                                                                     GetConfigParams().CostCentreId)) as PurchasingClerk;
                pClerk.Name = User.Username;
                pClerk.CostCentreCode = Code;


                User.CostCentre = pClerk.Id;
                pClerk.User = User;
                pClerk.PurchasingClerkRoutes = GetRoutesAssigned(pClerk);

                PurchasingClerkItem pClerkItem = new PurchasingClerkItem()
                {
                    MasterId = pClerk.Id,
                    Name = pClerk.Name,
                    ParentCostCentreId = pClerk.ParentCostCentre.Id,
                    StatusId = (int)EntityStatus.Active,
                    CostCentreTypeId = (int)pClerk.CostCentreType,
                    CostCentreCode = pClerk.CostCentreCode
                };
                pClerkItem.UserItem = CreateUserItem(pClerk.Id);
                pClerkItem.PurchasingClerkRouteItems = pClerk.PurchasingClerkRoutes.Select(Map).ToList();

                AuditLogEntry = string.Format("Created purchasing clerk costcentre for user: {0};", User.Username);
                Using<IAuditLogWFManager>(c).AuditLogEntry("User Administration", AuditLogEntry);
                response = await _proxy.PurchasingCerkAddAsync(pClerkItem);
                if(response.Success)
                {
                   ChangeAllocation(pClerkItem);
                }
                MessageBox.Show(response.ErrorInfo, "Distributr: Manage purchasing clerk", MessageBoxButton.OK,
                                MessageBoxImage.Information);
            }
            return response;
        }