A birth list is valid for one year from the date of creation. After this number of days, the list will be closed automatically. But before that, you can close your list manually at any time. Please note that a closed list can no longer be consulted by your friends and family, and cannot be reopened. When the list is closed, you can ask for your unused kitty to be converted into a gift card, which can be used on Natalys.com and in the shop.