The autogenerated JSON need to be updated to use the same tool, this can be a related Mantis issue. ( regenerating will make the problem go away since the nodeset was updated)

short term solution is to manual edit the JSON to correct the issue.

Some Clarification is needed here.

TrueState and FalseState are both marked as optional in the Opc.Ua.NodeSet2.Part9.js, and in the updated Opc.UaNodes2.js file, as per the spec (1.04 Part 9 Table 3 and 1.05.02 Part 9 Table 3)
NodeId i=9214 is InputArguments for TimedShelve (i=9213), which is marked as Mandatory as per the spec (1.04 Part 9 Table 57 and 1.05.02 Part 9 Table 83).

I'm unable to duplicate these results with version 502.

The issue is not related to the modeling rule of the NodeId.

The NodeId i=9214 and NodeId i=2991 are InputArguments and contain the "value". In the latest schema, there is no "Description" in the value.
Please see the attached screenshots.

The Nodesetutility now reads an updated Opc.Ua.Nodeset2.js file with the description for ShelvingTime removed.

This is resolved by issue 0009016: Need an updated Nodeset2 file

reviewed this issue as part of code reviews for the related issue - agreed in code reviews to changes, agreed to close issue