UnknownCodeType

§Usage: The value is used to add to boolean lists in order to have a three state item by complementing the true / false values with the Unknown state. This correspond to an explicit value. This could be achieved by not providing the information in most cases.
This value is still  present in case the parent attribute is mandatory or to explicitly provide the information.

Simple Type Information

Source

<xs:simpleType name="UnknownCodeType">
  <xs:annotation>
    <xs:appinfo>DF+2011-09-20+Create:</xs:appinfo>
    <xs:documentation xml:lang="EN">§Usage: The value is used to add to boolean lists in order to have a three state item by complementing the true / false values with the Unknown state. This correspond to an explicit value. This could be achieved by not providing the information in most cases. This value is still present in case the parent attribute is mandatory or to explicitly provide the information.</xs:documentation>
  </xs:annotation>
  <xs:restriction base="xs:NMTOKEN">
    <xs:enumeration value="Unknown"/>
  </xs:restriction>
</xs:simpleType>