Can I retain the customer payment methods for one-time payment checkouts?
How to discard the payment methods of a customer?
During checkouts, a new customer enters the payment method. As a merchant, you can make a choice to retain or discard this payment method.
This feature is not available in admin console but it is possible to do this via API. The below API call helps you retain or discard by passing true or false value.
retain_payment_source - Indicates whether the payment source should be retained for the customer.
optional, boolean, default=true