These pages can give you a feel of the sequence of API requests during various payment cases. They should help you in implementing the payment requests in the right order and can give you insight on what responses to expect on a high level.
- Retail - Direct Debit with Preauthorization - New Customer
- Retail - Direct Debit with Chargeback and Encashment
- Retail - Secure Invoice with Preauthorization
- Retail - Invoice with Preauthorization
- Retail - Credit card with preauthorization
- Retail - Cash in advance with preauthorization
- Retail - Cash on delivery with preauthorization
- Retail - Redirect with preauthorization