When you store payment details with a third party, you can use these details to authorise payments.
Initial Card on file/Subscription payments
The following fields must be passed in a Card-on-File/Subscription payment request:
shopperInteraction- set to Ecommerce for the initial payment or set to ContAuth for subsequent payments.
recurringProcessingModel- set to Subscription for payments that recur on a fixed schedule, and Card On File for payments that do not occur on a fixed schedule.