<xs:element name="PlacementLink">
    <xs:complexType>
        <xs:sequence>
            <xs:element ref="adsml:RelationshipName" />
            <xs:element name="PlacementReference" minOccurs="2" maxOccurs="unbounded">
                <xs:complexType>
                    <xs:simpleContent>
                        <xs:extension base="PlacementReferenceType">
                            <xs:attribute name="anchor" type="adsml:BooleanType" />
                            <xs:attribute ref="adsml:sequenceNo" />
                        </xs:extension>
                    </xs:simpleContent>
                </xs:complexType>
            </xs:element>
            <xs:element name="LinkageDetails" type="adsml:NegatableCodeType" minOccurs="0" maxOccurs="unbounded" />
        </xs:sequence>
    </xs:complexType>
</xs:element>