I am unable to import OpcUaAMLBaseTypesNodeSet2.xml as there are multiple nodeId's which has ParentNodeId attribute with no value . For ex: at line 110:
<UAObject NodeId="ns=1;i=5006" BrowseName="1:AutomationMLFiles" ParentNodeId="">
I think PArentNodeId should be present with some value so that we can link the node to its parent. Can you please confirm if this is issue in XML? If not, what should server do with the node whose Parent node id is missing?