To change date and time of your tickets issued in ticket-less mode on Frecciarossa, Frecciargento, FrecciabiancaIC, ICN and Espresso trains, if the fare allows booking change, you have to use Booking Code (PNR) and Booking Change Code (CP), printed on the pdf or ent via e-mail when buying the ticket.
You can carry out the Reservation Change online (operative every day, 24 hours) until train's departure, entering the codes:
If you choose a ticketless solution
you can make the booking change only with the ticketless procedure
(you cannot pick up the coupon of the new booking at the self-service points).
Should the booking change instead refer to a ticket that has already been picked up, you must print the booking-change coupon and show it to the on-board inspection personnel together with the original ticket.
You can pick up the new booking at the self-service machines in the stations (typing in the PNR and CP codes) or, if this is not possible, at the station ticket desks, as well as at the issuing agency or the Eurostar Clubs (for holders of Executive Cartaviaggio, Flexi, AV and first-class AV Fast tickets).