- Allow users to choose their preferred payment method in their specific situation.
- Offer at least one alternative to users temporarily or permanently unable to use a particular payment method.
Inform the customer as soon as possible, before the end of the order, that he has two means of payment.
In an e-commerce website:
- Carry out an ordering procedure and continue it at least until the payment stage;
- Check that at least two payment methods are actually available.