RolandP Hello Kauttooghaus71 Welcome to the SBB Community. We are all humans here not KI, a hello is always appreciated🙂 Provided the Swiss Half Fare Card is not active yet, you can cancel it and repurchase. The cancellation fee is CHF 10 per cancellation. See the refund form here: https://www.sbb.ch/en/help-and-contact/refunds-compensation/refunds-compensation/refund-form.html Kind regards, Roland