Payment Changes
Cancel, Return, Credit, Debit, Modify
The merchant must inform Ratepay of any changes made to an order. The merchant must implement the Payment Changes functionality in their shop backend for cancellations, returns, credits/debits and belatedly added shopping-basket items.
Payment change process flow
Description of Ratepay Gateway operations for post-checkout payment changes:
PAYMENT_CHANGE
cancellation
Merchant cancels some or all items of the purchase order.
return
Merchant returns some or all items of the purchase order.
change-order
Merchant or customer adds/removes items to the purchase order.
credit
Merchant adds a credit (discount) or debit (adjustment charge) to the purchase order (after delivery).
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attention
In the case of a combined change (e. g. return and credit) the merchant must send two PAYMENT_CHANGE requests, one for the return and one for the credit.