<xs:element name="Remark" maxOccurs="unbounded">
    <xs:annotation>
        <xs:documentation xml:lang="en">Supplementary information for this booking</xs:documentation>
    </xs:annotation>
    <xs:complexType>
        <xs:simpleContent>
            <xs:extension base="xs:string">
                <xs:attribute name="RPH" type="RPH_Type" use="optional">
                    <xs:annotation>
                        <xs:documentation xml:lang="en">Unique value associated with the Remark.</xs:documentation>
                    </xs:annotation>
                </xs:attribute>
                <xs:attribute name="Operation" type="ActionType" use="optional">
                    <xs:annotation>
                        <xs:documentation xml:lang="en">Indicates the required modification to the element.</xs:documentation>
                    </xs:annotation>
                </xs:attribute>
            </xs:extension>
        </xs:simpleContent>
    </xs:complexType>
</xs:element>