These fields are optional for obtaining a gift card balance:
- billTo_postalCode
- giftCard_transactionPostingDate
- giftCardBalanceInquiryService_reconciliationID
- invoiceHeader_clerkID
- merchantDefinedData_mddField_1 and merchantDefinedData_mddField_2
- merchantID
- merchantReferenceCode
- pos_terminalID
- purchaseTotals_grandTotalAmount-
- Optional for denominated gift cards.
- transactionLocalDateTime