LoredanaD Hello Shoosowhoud35 , Seat reservations are not possible on all trains. If you need assistance with your booking, you can call our SBB Contact Center on 0848 44 66 88 (CHF 0.08/min) Good evening, LoredanaD
RolandP Hello Shoosowhoud35 This blog post is answering all questions you might have: https://community.sbb.ch/blog/23887-demystifying-seat-reservations-on-swiss-trains-a-comprehensive-guide Kind regards, Roland