These fields are optional for activating a gift card:
buyerInformation.merchantCustomerId
merchantDefinedInformation[].key
merchantDefinedInformation[].value
merchantInformation.transactionLocalDateTime
orderInformation.amountDetails.merchantFundedAmount
orderInformation.amountDetails.totalAmount
orderInformation.billTo.postalCode
orderInformation.invoiceDetails.clerkId
orderInformation.merchantDescriptor.country
paymentInformation.card.isEscheatable
paymentInformation.returnSecurityCode
pointOfSaleInformation.terminalId
processingInformation.isPhysicalCard
processingInformation.reconciliationId
processingInformation.reportGroup
Supported for card-present activations only.
processingInformation.transactionPostDate
promotionInformation.code