<xs:attribute name="OptionType" use="required">
    <xs:annotation>
        <xs:documentation source="Description" xml:lang="en">A baggage related discount or surcharge type.</xs:documentation>
    </xs:annotation>
    <xs:simpleType>
        <xs:restriction base="xs:string">
            <xs:enumeration value="Discount">
                <xs:annotation>
                    <xs:documentation source="Description" xml:lang="en">ATPCO - Only applicable when using method F, applying option directly to a fare (not used in an EMD solution).</xs:documentation>
                </xs:annotation>
            </xs:enumeration>
            <xs:enumeration value="Included">
                <xs:annotation>
                    <xs:documentation source="Description" xml:lang="en">This item is free of charge due to loyalty program status or chosen price class.</xs:documentation>
                </xs:annotation>
            </xs:enumeration>
            <xs:enumeration value="Not Applicable">
                <xs:annotation>
                    <xs:documentation source="Description" xml:lang="en">This item is not available or applicable due to loyalty program status or chosen price class..</xs:documentation>
                </xs:annotation>
            </xs:enumeration>
            <xs:enumeration value="Surcharge" />
        </xs:restriction>
    </xs:simpleType>
</xs:attribute>