rail:tFourDigits

an identification string consisting of exactly four digits

Simple Type Information

Source

<xs:simpleType name="tFourDigits">
  <xs:annotation>
    <xs:documentation>an identification string consisting of exactly four digits</xs:documentation>
  </xs:annotation>
  <xs:restriction base="rail:tDigitString">
    <xs:length value="4"/>
  </xs:restriction>
</xs:simpleType>