5. Some services can make use of optional attributes if an identity provider offers them. For example, MIMAS Landmap and EDINA Digimap make use of the user's given name (givenName), surname (sn) and organisational unit (ou, treated as a Department name), if present. (Digimap uses these attributes, if present, to populate its initial online user registration form, not for ordinary logins). If such optional attributes are not supplied by the Identity Provider, the service may require the user to enter the same information manually, and these entries may need to be manually checked by the operator of the service.