Controversial supertype of the NodeId DataType (according the nodeset file Opc.Ua.NodeSet2.xml)|OPC UA Standard|Forum|OPC Foundation

Hello Everyone,

In my OPC UA implementation I use the nodeset file Opc.Ua.NodeSet2.xml as the source of truth for those nodes that are defined by OPC Foundation. The problem is that, according the nodeset file, the supertype of the NodeId DataType is not the Structure DataType but the BaseDataType. This is how it is defined in the file:

<UADataType NodeId="i=17" BrowseName="NodeId">
<DisplayName>NodeId</DisplayName>
<Documentation>https://reference.opcfoundatio.....on&gt;
<References>
<Reference ReferenceType="HasSubtype" IsForward="false">i=24</Reference>
</References>
</UADataType>

Here we have the claim that the NodeId DataType is subtype if the (i=24) BaseDataType. At the same time, the specification describes this type as a structured type (and in fact this is a structure with 3 fields).

Is it a real mistake? Or I misunderstand the declaration.

BTW, the same I see problem with ExpandedNodeId.

Thanks.