Optional cash back amount for debit transactions.
This property may contain an optional cash back amount when authorizing a debit card transaction. The value of the TransactionAmount must reflect the cost of the goods or service purchased plus this DebitCashBack amount. This property is presented in CA Dollars with a decimal point in the proper position. The maximum value for this property is "999999.99". To send a transaction without cashback, set DebitCashBack to "".
This must be formatted as a dollar amount with a real decimal point, excluding the dollar sign. For instance "12.00"