Re-identification is necessary if using the mutual Online Check-in service with American Airlines*, British Airways, Finnair, Iberia or Malaysia Airlines. After completing the normal identification (Step 3), the second identification screen will display. Please select "Passenger who have booked the flight operated by other airlines" and enter the necessary information. Once the information is identified, you may start the Online Check-in procedure on the operating airline's website. For details on how to use Online Check-in on the partner carrier's website, please contact each airline.