The identifier (e.g., XID or DSTransactionID) assigned by the authentication system for tracking and verification.
Authentication Response
The result of the authentication process.
Authentication Value
The cryptographic token (CAVV/AAV) generated during the authentication process to validate the cardholder's identity.
Electronic Commerce Indicator (ECI)
The Electronic Commerce Indicator (ECI) represents the authentication level and indicates liability shift during online or card-not-present transactions.
Version
The version of the authentication protocol (e.g., 3D Secure 1.0 or 2.0) used for the transaction.