You can use a smartphone to change or revise a ticket originally booked on a PC (and vice versa), as long as it is executed prior to the departure time of the reserved train.
Depending on the content of the reservation, there may be situations where the ticket may not be changed nor canceled. Please check reservation details. * There are restrictions on changing reservations, such as regular tickets without special deals and some changes may not be allowed.
FAQ ID :3838e