Hello beatriz gomes
Your question is not enough concrete in order to answer it correctly.
What is the route you are intending to take?
As a general rule, Supersaver tickets are bound to a specific connection, they cannot be used on another train. Consequently, when arriving by air, this type of ticket is not recommended. Same with zone-based tickets from regional fare networks; these tickets can only be used within their validity printed on the ticket.
If you purchase a regular point-to-point ticket, or a Saver Day Pass these tickets can be used for any connection, although you had to choose a connection when purchasing it. I assume that is the case for you.
Kind regards,
Roland