Identifies the 3DS 2.x minor version used for authentication.                            

This value is the reference generated by the issuer to recognize that the authentication has taken place.

Supported formats are CAVV, AEVV, UCAF.

CAVV—Cardholder authentication verification value used by Visa, Disc, UP

AEVV—American Express Verification value

UCAF—Universal cardholder authentication field used by Mastercard

Must be encoded using base16 (Hex encoding) or base64 encoding

Electronic Commerce Indicator shows the value of the result of the authentication. Valid values:

• Mastercard 2, 1 ,0
• Visa, Amex, Disc 5, 6, 7

2 or 5 = Fully Authenticated Transaction

1 or 6 = Attempted Authenticated Transaction

0 or 7 = Non 3D Secure Transaction

The unique transaction identifier assigned by the Directory Server to identify a single transaction.