Hello Fehima
Lamentablemente, en esta plataforma no hablamos español. Por lo tanto, responderemos en inglés.
Unfortunately, on this platform we do not speak Spanish. Therefore, we will answer in English. You can use the translate button below displayed underneath my message.
What is the issue with the date of birth? Is it completely wrong? If so, and provided you purchased your pass from SBB, you can purchase a new pass and ask for a refund for the one with the date of birth. You can ask for a refund of the pass using this form (a CHF 10 admin fee will be deducted):
https://sbb-tickets.cc/en/help-and-contact/refunds-compensation/refunds-compensation/refund-form.html
If you mixed up day and month numbers, nevermind, this is not a big issue as long as the names are according to the passport.
Kind regards,
Roland