var basketPurchaseOrder = SiteContext.Current.OrderContext.GetBasket().PurchaseOrder;

            //Umbraco Member wrapper including properties.
            ECommerceMember eMember = UmbracoMembers.GetCurrentMember();

            bool existInUcommerce = Customer.Exists(c => c.UmbracoMemberId == eMember.UmbracoId);
            if(!existInUcommerce)
            {
                Customer customer = new Customer
                                        {
                                            UmbracoMemberId = eMember.UmbracoId,
                                            FirstName = eMember.Firstname,
                                            LastName = eMember.Surname,
                                            EmailAddress = eMember.Email,
                                            PhoneNumber = eMember.Telephone
                                        };


                customer.AddAddress(new Address
                                        {
                                            AddressName = "Address name 1",
                                            FirstName = eMember.Firstname,
                                            LastName = eMember.Surname,
                                            EmailAddress = eMember.Email,
                                            PhoneNumber = eMember.Telephone,
                                            Country = Country.All().FirstOrDefault(),
                                            PostalCode = "Postal Code",
                                            City = "City",
                                            CompanyName = eMember.Organization,
                                            Line1 = "Line 1",
                                            Line2 = "Line 2"
                                        });

                customer.Save();

                basketPurchaseOrder.Customer = customer;
                basketPurchaseOrder.Save();
            }

            CallBasketPipeline();
            var chekoutPipeline = PipelineFactory.Create<PurchaseOrder>("Checkout"); //"Checkout" is the default pipeline implemented in \umbraco\UCommerce\Pipelines\Checkout.config

            if (chekoutPipeline.Execute(basketPurchaseOrder) != PipelineExecutionResult.Error)
            {
                return true;
            }

            Log.Add(LogTypes.Custom, 0, "----> Error in checout pipeline: {0}");
            return false;