- Initiate a transaction with the
GetAdditionalDatatender option, and without recurring parameters.
If a recurring contract already exists, the Adyen CA retrieves the
shopperEmailfrom the recurring contracts based on the card number. The card alias is always returned.
- The Merchant POS system is provided with these shopper details and can check the merchant database for previous shopper purchases. It can then decide on a discount for the ongoing transaction.
- The adjusted amount is then provided and the transaction can be completed. The merchant database can be checked on both shopper reference and card alias.