Advance Passenger Information (API) must be added to all bookings that include a Folkestone to Calais journey, prior to the date of travel.
You have the option of either emailing the customer a copy of their booking confirmation email, which includes their booking reference and password, plus a link to the Eurotunnel API system, or you can add the passenger information yourself.
If you or your customer do not supply API in advance of travelling, they may be stopped at check-in and asked to add their passenger details to your booking before continuing on their journey.