Hello,
I'm trying to make sense of the changes in the rtm4railml3 schema. It seems RTM_NetworkResource now still extends from RTM_NamedResource but it no longer adds the element:
<xs:element name="isValid" type="rail3:RTM_Validity" minOccurs="0" maxOccurs="unbounded"/>
I'm guessing that this is due to RTM_NetEntity receiving the elementState element:
<xs:complexType name="RTM_NetEntity">
<xs:annotation>
<xs:documentation>Objects like infrastructure assets can be located on the network as NetEntities</xs:documentation>
</xs:annotation>
<xs:complexContent>
<xs:extension base="rail3:RTM_NamedResource">
<xs:sequence>
<xs:element name="elementState" type="rail3:SubSchemaElementState" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
However, this means that it's no longer possible to assign validity periods to other elements that are inheriting from RTM_NamedResource, such as RTM_NetElement, RTM_Network, RTM_Relation, ...
This is a major change! I'm guessing that this was an accident and perhaps the intention was to put the new elementState element on the RTM_NamedResource where previously the validity was?
[Updated on: Tue, 16 June 2026 21:16]
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