Whereas it is acknowledged that, as a general rule, badly mutilated banknotes do not qualify for exchange, and specific reference will be made to certain categories of banknotes that will be excluded from the exchange rules; whereas marking schemes will be implemented by some NCBs of participating Member States with the aim of facilitating and protecting the withdrawal of the national banknotes, and therefore marked banknotes will be explicitly mentioned among the banknotes that do not qualify for exchange; whereas it is deemed necessary to make information on the marking procedures in the different Member States available on the ECB website.