The merchant receives the SDK Challenge from authentitication request. Field Description Required Format cardType Card type: CB, VISA, MASTERCARD, MAESTRO, AMEX Version 31 or higher (3DSV2) threeDSServerTransID threeDSVersion authenticationType transStatus Returns an indicator about enrollment result : see values transStatus. sdkTransID Universally unique transaction identifier assigned by the 3DS SDK to identify a single transaction. dsTransID acsTransID acsRenderingType acsReferenceNumber acsSignedContent acsOperatorID acsChallengeMandated sCondition