<xs:element name="ResendMaterialsByReference">
    <xs:complexType>
        <xs:sequence>
            <xs:element name="BookingReferences" minOccurs="0" maxOccurs="unbounded">
                <xs:complexType>
                    <xs:sequence>
                        <xs:element ref="adsml-bo:BookingReference" minOccurs="0" />
                        <xs:element ref="adsml-bo:AuxiliaryBookingReferences" minOccurs="0" />
                        <xs:element name="Placement" minOccurs="0" maxOccurs="unbounded">
                            <xs:complexType>
                                <xs:sequence>
                                    <xs:element ref="adsml-bo:PlacementReference" minOccurs="0" maxOccurs="unbounded" />
                                    <xs:element ref="adsml-bo:AuxiliaryPlacementReferences" minOccurs="0" maxOccurs="unbounded" />
                                </xs:sequence>
                            </xs:complexType>
                        </xs:element>
                    </xs:sequence>
                </xs:complexType>
            </xs:element>
            <xs:element ref="AdContentReferences" minOccurs="0" maxOccurs="unbounded" />
        </xs:sequence>
    </xs:complexType>
</xs:element>