Hello. 

So i've got this problem. Whenever i go to payment window i use:

Money money = new Money(basket.OrderTotal.Value, Currency.FirstOrDefault(x => x.ISOCode == "DKK"));
PaymentRequest request = new PaymentRequest(basket, selectedPaymentMethod, money);

selectedPaymentMethod.GetPaymentMethodService().RequestPayment(request);

This would create a new payment object every time i go to the window. In the case that a customer hits the back button in the browser, and click pay again, multiple payments for the basket is created.

How would i deal with this? 

I guess i could just:

basket.ClearPayments();

Order would it be better to get the payement associated with the basket and use that?

if (basket.Payments.Any())
{
  Payment payment = basket.Payments.First(); 

}