Optional Fields for Checking Enrollment in Payer Authentication {#id_j33_w5m_rfc} --------------------------------------------------------------------------------- These fields are usually optional when you verify enrollment for a Payer Authentication transaction. In certain circumstances, the information provided by an optional field might be required before a transaction can proceed. Those optional fields that are sometimes required are also listed as required fields with the circumstance described. [acquirerInformation.bin](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/acq-info-aa/acq-info-acquirer-bin.md "") : [acquirerInformation.country](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/acq-info-aa/acq-info-country.md "") : [acquirerInformation.merchantId](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/acq-info-aa/acq-info-merchant-id.md "") : [clientReferenceInformation.code](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/client-ref-info-aa/client-ref-info-code.md "") : [consumerAuthenticationInformation.acsWindowSize](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-acs-window-size.md "") : [consumerAuthenticationInformation.alternateAuthenticationData](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-alternate-auth-data.md "") : [consumerAuthenticationInformation.alternateAuthenticationDate](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-alternate-auth-date.md "") : [consumerAuthenticationInformation.alternateAuthenticationMethod](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-alternate-auth-method.md "") : [consumerAuthenticationInformation. authenticationBrand](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-authentication-brand.md "") : This field is only used with mada cards. [consumerAuthenticationInformation.authenticationTransactionId](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-authentication-txn-id.md "") : [consumerAuthenticationInformation.authorizationPayload](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-authorization-payload.md "") : [consumerAuthenticationInformation. challengeCode](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-challenge-code.md "") : > WARNING Modifying this field could affect your liability shifts. Unless you are very familiar with the various types of authentication, do not change the default settings before consulting with customer support. [consumerAuthenticationInformation.credentialEncrypted](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-credential-encrypted.md "") : [consumerAuthenticationInformation.customerCardAlias](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-customer-card-alias.md "") : [consumerAuthenticationInformation.sdkMaxTimeout](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-sdk-max-timeout.md "") : [consumerAuthenticationInformation.decoupledAuthenticationIndicator](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-decouple-auth-indicator.md "") : [consumerAuthenticationInformation.decoupledAuthenticationMaxTime](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-decouple-auth-max-time.md "") : [consumerAuthenticationInformation.default Card](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-default-card.md "") : This field is recommended for Discover ProtectBuy. [consumerAuthenticationInformation. marketingOptIn](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-marketing-opt-in.md "") : This field is recommended for Discover ProtectBuy. [consumerAuthenticationInformation. marketingSource](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-marketing-source.md "") : This field is recommended for Discover ProtectBuy. [consumerAuthenticationInformation.mcc](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-mcc.md "") : [consumerAuthenticationInformation.merchantFraudRate](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-merchant-fraud-rate.md "") : [consumerAuthenticationInformation.merchantScore](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-merchant-score.md "") : [consumerAuthenticationInformation.messageCategory](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-message-category.md "") : [consumerAuthenticationInformation.otpTo ken](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-otp-token.md "") : [consumerAuthenticationInformation.overrideCountryCode](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-override-country-code.md "") : [consumerAuthenticationInformation.overridePaymentMethod](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-override-country-code.md "") : [consumerAuthenticationInformation.prior AuthenticationData](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-prior-auth-data.md "") : [consumerAuthenticationInformation.priorAuthenticationMethod](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-prior-auth-method.md "") : [consumerAuthenticationInformation.priorAuthenticationReferenceId](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-prior-auth-reference-id.md "") : [consumerAuthenticationInformation.priorAuthenticationTime](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-prior-auth-time.md "") : [consumerAuthenticationInformation.productCode](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-product-code.md "") : [consumerAuthenticationInformation.requestorName](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-requestor-name.md "") : [consumerAuthenticationInformation.requestorInitiatedAuthenticationIndicator](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-requestor-initiated-auth-indicator.md "") : [consumerAuthenticationInformation.returnURL](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-return-url.md "") : [consumerAuthenticationInformation.scoreRequest](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-score-request.md "") : [consumerAuthenticationInformation.sdkMaxTimeout](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-score-request.md "") : [consumerAuthenticationInformation.strongAuthentication.authenticationIndicator](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-strong-auth-auth-indicator.md "") : [consumerAuthenticationInformation.strongAuthentication.secureCorporate PaymentIndicator](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-strong-auth-secure-corp-payment-id.md "") : [consumerAuthenticationInformation.strongAuthentication.transactionMode](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-strong-auth-txn-mode.md "") : [consumerAuthenticationInformation.whiteListStatus](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/cons-auth-info-aa/cons-auth-info-white-list-status-a.md "") : [merchantInformation.merchantDescriptor.name](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/merch-info-aa/merch-info-merchant-descriptor-name.md "") : [merchantInformation.merchantDescriptor.url](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/merch-info-aa/merch-info-merchant-descriptor-url.md "") : [orderInformation.amountDetails.currency](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-amount-details-currency.md "") : [orderInformation.billTo.address2](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-bill-to-address2.md "") : [orderInformation.billTo.country](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-bill-to-country.md "") : This field is required for US and Canada. [orderInformation.billTo.email](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-bill-to-email.md "") : [orderInformation.billTo.firstName](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-bill-to-first-name.md "") : [orderInformation.billTo.lastName](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-bill-to-last-name.md "") : [orderinformation.billTo.locality](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-bill-to-locality.md "") : [orderInformation.billTo.postalCode](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-bill-to-postal-code.md "") : [orderInformation.lineItems.passenger.firstName](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-line-items-passenger-firstname.md "") : [orderInformation.lineItems.passenger.last Name](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-line-items-passenger-lastname.md "") : [orderInformation.lineItems.productDescription](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-line-items-product-description.md "") : [orderInformation.lineItems.productName](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-line-items-product-name.md "") : [orderInformation.lineItems.productSku](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-line-items-product-sku.md "") : [orderInformation.lineItems.quantity](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-line-items-quantity.md "") : [orderInformation.lineItems.shippingAddress1](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-line-items-shipping-address1.md "") : [orderInformation.lineItems.shippingAddress2](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-line-items-shipping-address2.md "") : [orderInformation.lineItems.shippingCity](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-line-items-shipping-city.md "") : [orderInformation.lineItems.shippingCountryCode](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-line-items-shipping-country-code.md "") : [orderInformation.lineItems.shippingDestinationTypes](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-line-items-shipping-destination-types.md "") : [orderInformation.lineItems.shippingLastName](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-line-items-shipping-last-name.md "") : [orderInformation.lineItems.shippingMiddleName](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-line-items-shipping-middle-name.md "") : [orderInformation.lineItems.shippingPhone](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-line-items-shipping-phone.md "") : [orderInformation.lineItems.shippingPostalCode](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-line-items-shipping-postal-code.md "") : [orderInformation.lineItems.shippingState](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-line-items-shipping-state.md "") : [orderInformation.lineItems.unitPrice](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-line-items-unit-price.md "") : [orderInformation.lineItems\[\].quantity](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-line-items-quantity.md "") : [orderInformation.lineItems\[\].totalAmount](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-line-items-total-amount.md "") : [orderInformation.lineItems.shippingDestinationTypes](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-line-items-shipping-destination-types.md "") : [orderInformation.reordered](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-reordered.md "") : [orderInformation.shippingDetails.shippingMethod](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-shipping-details-shipping-method.md "") : [orderInformation.shipTo.address1](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-shipto-address1.md "") : [orderInformation.shipTo.address2](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-shipto-address2.md "") : [orderInformation.shipTo.address3](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-shipto-address3.md "") : [orderInformation.shipTo.administrativeArea](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-shipto-administrative-area.md "") : [orderInformation.shipTo.country](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-shipto-country.md "") : [orderInformation.shipTo.destinationCode](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-shipto-destination-code.md "") : [orderInformation.shipTo.email](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-shipto-email.md "") : [orderInformation.shipTo.firstName](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-shipto-first-name.md "") : [orderInformation.shipTo.lastName](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-shipto-first-name.md "") : [orderInformation.shipTo.middleName](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-shipto-locality.md "") : [orderInformation.shipTo.locality](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-shipto-locality.md "") : [orderInformation.shipTo.phoneNumber](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-shipto-phone-num.md "") : [orderInformation.shipTo.postalCode](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-shipto-postal-code.md "") : [orderInformation.totalOffersCount](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/order-info-aa/order-info-total-offers-count.md "") : [paymentInformation.card.number](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/payment-info-aa/payment-info-card-number.md "") : [paymentInformation.card.type](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/payment-info-aa/payment-info-card-type-a.md "") : This field is strongly recommended. [paymentInformation.card.securityCode](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/payment-info-aa/payment-info-card-security-code-a.md "") : [paymentInformation.fluidData.value](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/payment-info-aa/payment-info-fluid-data-value.md "") : [paymentInformation.tokenizedCard. cryptogram](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/payment-info-aa/payment-info-tokenized-card-cryptogram.md "") : This field is strongly recommended. [paymentInformation.tokenizedcard.expirationMonth](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/payment-info-aa/payment-info-tokenized-card-exp-month.md "") : [paymentInformation.tokenizedCard.expirationYear](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/payment-info-aa/payment-info-tokenized-card-exp-year.md "") : [paymentInformation.tokenizedcard.number](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/payment-info-aa/payment-info-card-number.md "") : [paymentInformation.tokenizedCard.transactionType](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/payment-info-aa/payment-info-tokenized-card-txn-type.md "") : [paymentInformation.tokenizedCard.type](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/payment-info-aa/payment-info-tokenized-card-type-a.md "") : [recurringPaymentsInformation. originalPurchaseDate](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/recurring-payment-info-aa/recurring-payment-info-original-purchase-date.md "") : When this field is empty, the current date is used. riskInformation.buyerHistory. transactionCountDay : This field is recommended for Discover ProtectBuy. Contact customer support for more information about this field. riskInformation.buyerHistory. transactionCountYear : This field is recommended for Discover ProtectBuy. Contact customer support for more information about this field. riskInformation.buyerHistory. accountPurchases : Contact customer support for more information about this field. riskInformation.buyerHistory. addCardAttempts : This field is recommended for Discover ProtectBuy. Contact customer support for more information about this field. riskInformation.buyerHistory. customerAccount.createDate : This field is recommended for Discover ProtectBuy. Contact customer support for more information about this field. riskInformation.buyerHistory. customerAccount.lastChangeDate : This field is recommended for Discover ProtectBuy. Contact customer support for more information about this field. riskInformation.buyerHistory. customerAccount.passwordChangeDate : This field is recommended for Discover ProtectBuy. Contact customer support for more information about this field. riskInformation.buyerHistory. customerAccount.shipAddressUsageDate : Contact customer support for more information about this field. riskInformation.buyerHistory. paymentAccountDate : Contact customer support for more information about this field. riskInformation.buyerHistory. priorSuspiciousActivity : Contact customer support for more information about this field. riskInformation.buyerHistory. transactionCountDay : Contact customer support for more information about this field. riskInformation.buyerHistory. transactionCountYear : Contact customer support for more information about this field. [travelInformation.legs.carrierCode](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/travel-info-aa/travel-info-transit-airline-legs-carrier-code.md "") : [travelInformation.legs.departureDate](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/travel-info-aa/travel-info-legs-departure-date.md "") : [travelInformation.legs.origination](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/travel-info-aa/travel-info-legs-origin.md "") : [travelInformation.numberOfPassengers](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/travel-info-aa/travel-info-numpassengers.md "") : [travelInformation.passengers.firstName](https://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/travel-info-aa/travel-info-passengers-firstname.md "") : [travelInformation.passengers.lastName](hhttps://developer.cybersource.com/docs/cybs/en-us/api-fields/reference/all/rest/api-fields/travel-info-aa/travel-info-passengers-lastname.md "") :