Vouchers can be redeemed at the following link until April 13, 2025: Redeem voucher. You will then automatically be taken to the ticket ordering portal, where you can redeem your voucher for a free ticket. Online vouchers can only be redeemed for a ticket online and you will need to enter the online voucher number or use the online voucher link. Redeeming or exchanging vouchers at the fair is not possible. The ticket is free to you as an invited visitor, as the costs of the ticket will be borne by the exhibitor from whom you received the invitation. Since the exhibitor will be charged only if you actually visit the trade fair and pass through the turnstile, you do not need to inform the ticket service or cancel your ticket if you do not use it. Following your redemption, you will receive a valid ticket entitling you to admission to bauma.