Add option "removed" to vouchers

From PDP Mail

Vouchers cannot be edited or deleted? Is this on purpose? In case of a mistake, how should we make clear that the voucher was not issued, and that there is a corrected version available?

Vouchers cannot be edited or deleted except for its status. It is done on purpose to keep the record of all the vouchers issued. However, we will add the option to mark a voucher as “removed” (it would still be on the system for the record). For now, we recommend to mark wrong vouchers as expired and create another one.