List of extra charges for Hotel transactions.
This property contains a six-character numeric value used to identify any additional ancillary charges that are booked to the cardholder's card after the transaction was completed. The merchant may enter one or more codes on each transaction being settled. If extra charges are being submitted, this field must contain value(s) as defined below.
For example, to indicate charges in both the gift shop and mini bar, ExtraCharges should equal "34".
This field is only applicable to Visa card transactions.