The QIFIdandReferenceBaseType defines an unsigned integer with no leading zeros. It is used as the base type for ids and references to ids. It is not used as the type of an element or attribute.
<xs:simpleType name="QIFIdAndReferenceBaseType"><xs:annotation><xs:documentation>The QIFIdandReferenceBaseType defines an unsigned integer with no leading zeros. It is used as the base type for ids and references to ids. It is not used as the type of an element or attribute.</xs:documentation></xs:annotation><xs:restriction base="xs:unsignedInt"><xs:pattern value="[1-9][0-9]*"/></xs:restriction></xs:simpleType>