If you cannot find any items among the search results that match your lost item, you can return to the search results later.

You can also click the button Register lost item to register with the lost property office(s). You'll be asked to select the type of item you have lost, and describe it with details to make it easy for the lost property office to match your details with the registered details of their found items.

When you register an item as lost you also get a user account, if you don't have one already. This lets you update your registration later on. You can set a password for your account by clicking the link under the login form.