On which trains is reservation compulsory with the flexible fare Europe?

Reservations are compulsory on some international services. If so, the reservation will already be included free of charge in the ticket price. Reservations are required in the following trains:

• France: high-speed trains (ICE and TGV) to Paris and Marseille (including all stopovers)
• Italy: Trains to Milan via Basel Bad Bf
• Poland: All long distance trains to Poland

Please note that you cannot travel on trains requiring reservations without a reservation, even if you have already purchased a flexible fare ticket including a reservation for another train.