<xs:element name="CustomerNumber" minOccurs="0" xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:annotation>
    <xs:documentation xml:lang="de">Nummer beim Kunden</xs:documentation>
    <xs:documentation xml:lang="en">Number at customers site</xs:documentation>
  </xs:annotation>
  <xs:simpleType>
    <xs:restriction base="xs:string">
      <xs:maxLength value="70" />
    </xs:restriction>
  </xs:simpleType>
</xs:element>