<xs:attribute name="name" use="required"> <xs:simpleType> <xs:restriction base="xs:NMTOKEN"> <xs:enumeration value="CurrentTimeStamp" /> <xs:enumeration value="LastTimeStamp" /> <xs:enumeration value="MinimumLimit" /> <xs:enumeration value="KeyLimit" /> <xs:enumeration value="ReplicationSupport" /> <xs:enumeration value="Other" /> </xs:restriction> </xs:simpleType> </xs:attribute>