DTD out of date?

Could it be that the DTD is out of date? When I configure users with yast2 autoyast and store the xml-file, xmllint reports problems with <group> and <fullname>. And I checked the DTD myself. There is no 'fullname' at all and group is an element with subelements in the DTD, but a data element in the autoyast generated file (hope I'm not mixing up xml nomenclature here). Holger.