Value to be passed in the authorization message.
def get_authentication_eci() -> str: ...
authentication_eci = property(get_authentication_eci, None)
This property is determined by the Access Control Server (ACS), and is filled after the call to send_auth_request (for a frictionless flow), or when the Results Request Message (RReq) is parsed using check_response (for a challenge flow).
This property contains the two digit Electronic Commerce Indicator (ECI) value, which is to be submitted in a credit card authorization message. This value indicates to the processor that the customer data in the authorization message has been authenticated. The data contained within this property is only valid if the transaction_status is "Y" or "A".
This property is read-only.