The voucher can be used for only one rental, and only one voucher can be used for one rental. The voucher can cover the full rental fee, therefore, in this case the Barion site will not be used for payment. There is no refund available in case of a voucher. Also, if the rental fee exceeds the value of the voucher, the remaining amount will not be refunded. In case of payment installments, the voucher will be used initially to cover the rental fee. Consequently, it is possible that in case of a later installment, the amount has to be coverd by credit card, although the previous installments were charged against the voucher. The voucher is valid for a year from the issue date. Therefore, the reservation has to be made within this period, however, the rental itself can be later than this one-year period.