<xs:element name="PostOfficeNumber" minOccurs="0">
    <xs:annotation>
        <xs:documentation>Specification of the number of the postoffice. Common in rural postoffices</xs:documentation>
    </xs:annotation>
    <xs:complexType mixed="true">
        <xs:attribute name="Indicator">
            <xs:annotation>
                <xs:documentation>MS in MS 62, # in MS # 12, etc.</xs:documentation>
            </xs:annotation>
        </xs:attribute>
        <xs:attribute name="IndicatorOccurrence">
            <xs:annotation>
                <xs:documentation>MS occurs before 62 in MS 62</xs:documentation>
            </xs:annotation>
            <xs:simpleType>
                <xs:restriction base="xs:NMTOKEN">
                    <xs:enumeration value="Before" />
                    <xs:enumeration value="After" />
                </xs:restriction>
            </xs:simpleType>
        </xs:attribute>
        <xs:attributeGroup ref="grPostal" />
        <xs:anyAttribute namespace="##other" />
    </xs:complexType>
</xs:element>