TransactionIndex refers to the unique identifier given by the iVeri Gateway to a set of related transactions. When a TransactionIndex is an input parameter, then the command is referred to as a “follow up”. Therefore, the actions with the suffix “with TransactionIndex” mean “as a Follow up transaction”.
Follow up transactions by default use the same card information that was set in the initial transaction, however by default the follow up is considered a Card not present (Keyed) transaction.
Specifying one of the following mutually exclusive optional follow up input parameters can change the default behaviour:
- Track2 : the follow up transaction is considered a “Swiped” transaction
- ExpiryDate: applicable to change when the original expiry date is in the past.
A follow up transaction can be done within 6 months of the original transaction.
It can be used within a valid transaction sequence (eg a credit after a debit), but not for an invalid sequence (eg a debit following a credit).
It cannot be used for a PIN based transaction.