Stepup

Cardinal provided identifier for the partner. Length - Up to 24 Characters

Version of the message based on 3DS spec. Examples - 1.0.2, 2.1.0, 2.2.0

Cardinal provided identifier for the partner. Length - Up to 24 Characters

Counter for tracking the number of Stepups. Each stepup can go from Stepup -> InitiateAction -> Validate. If the user requests a "resend" via the browser templates it will initiate another Stepup request.

Unique identifier to identify the particular Stepup request. Length will be 36 Characters.

VCAS generated transaction reference id. Length - Up to 36 Characters. 3DS 1.0.2 - 28 character alpha-numeric. EMV 3DS - 36 character GUID.

Directory Server (DS) generated transaction reference id. GUID Format. Note: EMV 3DS Transactions only

Device Locale from the browser header or from the app's language settings. This value can be a single locale value or multiple concatenated together via commas. In 3DS1 this value will be directly from the browser's "Accept-Language" header. However, in 3DS2 this is not available due to new flows so this will be a single language value following BCP 47 format e.g. en-US or en,es-PE;q=0.9,es;q=0.8

Device user agent from the browser header or the app's device identifier. Length - Up to 2048 Characters

Version of the RDX protocol being used. This will be used to enable new features without breaking current integrations. Example: 2.2.0 and 2.2.1

Used to identify the reason the Stepup request was initiated. Only available for Cardholder Resend, future values and scenarios may be added.

Indicates the type of 3RI request for EMV transactions.

Indicates the type of Authentication request. This data element provides additional information to the ACS to determine the best approach for handling an authentication request.

Identifies the category of the message for a specific use case.

Echoed from Request. Length - Up to 24 Characters

Echoed from Request. Length - Up to 24 Characters

ERROR is returned on any interal/technical issues. ATTEMPTS is only supported for 1.0.2 transactions. REJECTED is only supported for 2.x.x transactions. AUTHENTICATED will return a Y back to the merchant

Echoed from Request. Length - 36 Characters

Echoed from Request. Length - Up to 36 Characters

Language to display the instructions and prompt to the cardholder. This value will decide which template is loaded, provided the correct template language is available. If not provided, the language is selected based on Issuer configuration and browser preference e.g. en-US. Length - Up to 8 Characters

Used to identify what type of stepup.

If returned, this value will be used in the creation of certain Authentication Values (AV) for EMV 3DS. The value passed must conform to the current AV value the Issuer is using. This may also depend on the card brand of the transaction. For example, CAVV and IAV accept different values. On Challenge responses (Stepup, Initiate, Validate) this value is currently ignored for CAVV usages in favor of mapping to the 'Credential Type'. For Enhanced IAV SPA2 usage, if passed, this value will override the mapping to the 'Credential Type'. Note: This field is only available for EMV 3DS transactions and not available on 3DS 1 transactions Note: The value here will be converted to the Hexadecimal equivalent. Please see 'VCAS Enhanced AV' document for more details on current AVs available and the corresponding values.

Indicates if legal consent is required for the behavioral biometrics flow.

Provides information on why the Transaction Status field has the specified value.

URL provided for OOB app-based authentication flow. The URL will redirect the user to the appropriate location within the authentication app. Not applicable for browser-based authentication.