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The <ServiceFacilitySet> element has been extended with a <KeyValue> containing the attributes. The attributes are ServiceFacilities but specified with the codes defined in TRP/Silverrail. That way the full range of attributes necessary in the sales system, both the old and the new systems, can be specified.
If you specify the KeyValue attributes then you do not have to specify the same facilities using the standard NeTEx enums, so you can just use the KeyValue attributes if you want to.
Note that there can exist ServiceFacilities belonging to both ServiceJourney-elements (if they should be applied to the entire journey) and to JourneyPart-elements (if the attributes only apply to a part of the journey). See the NeTEx example below in the ServiceJourney-productCode-section.
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