Using the payment methods invoice and installment with payment guarantee you receive the respective amount from your selected financial service provider even if the payment was not yet affected by the consumer in your online shop.


The items purchased in the online shop are sent to your consumer together with the relevant invoice. The consumer then affects the transfer of the respective amounts within the due date for payment.


The items purchased in the online shop are sent to the consumer. The relevant partial amounts are collected from the consumer’s account by means of direct debit on a monthly basis.


If your online shop is enabled for payment methods invoice or installment you’re required to use additional request parameters listed on the corresponding pages of the provider. These request parameters must have been set previously whenever you set the payment method to INVOICE or AFTERPAY or your consumer selects those payment methods after QPAY Checkout Page is invoked with payment method SELECT.

If payment by invoice or installment has been accepted you’ll get as a response the parameter paymentState with the value SUCCESS. At the same response, the parameter gatewayReferenceNumber is returned. We recommend storing this reference number of the invoice for tracking purposes.

For payment method invoice the otherwise optional request parameters for consumer billing data are required for all providers.