The customer is redirected back to the merchant’s system (CallbackURL). The data passed to the Merchant’s System should be checked for errors at this point.

1. At this point, the payment processing has been completed. If the transaction was successful, money hasbeenexchangedbetweenbanks.

2. If errors occur with the results (for example; Variable Tampering), the merchant’s system should stop the transaction from going any further and move to step 11.

The merchants system (CallbackURL) then “PULLS” the transaction results direct from payment gateway.

The merchant’s system should display the transaction result to the customer (or desired error information if any occurred before this point).