BerthCodeType

<xs:simpleType name="BerthCodeType">
  <xs:annotation>
    <xs:documentation>Used for train or ferries or ship...</xs:documentation>
  </xs:annotation>
  <xs:restriction base="xs:string">
    <xs:enumeration value="Lower"/>
    <xs:enumeration value="Middle"/>
    <xs:enumeration value="Upper"/>
  </xs:restriction>
</xs:simpleType>