Verifies that the CardNumber is enrolled in the 3-D Secure program.
def verify_enrollment() -> None: ...
After optionally using request_card_ranges, VerifyEnrollment should be used to send a Verify Enrollment Request (VEReq) message to the Directory Server specified by the directory_server_url property. If the credit card number specified in card_number is enrolled in the 3-D Secure program, the card_enrolled property will be "Y", and the acsurl property will contain the fully qualified URL of the Access Control Server in which to send the Payer Authentication Request (PAReq) message.
If enrollment is confirmed, get_authentication_packet can be used to generate the Payer Authentication Request (PAReq).