OPC UA Server not accessing IRC5 controller tags

When I use the OPC UA Server with a virtual controller, I have no issues accessing data tags within the IRC5 controller. When I connect to an actual robot, I’m unable to access the IRC5 data nodes. I see "MonitoredItem.MonitoredItem - Connect error: BadNodeIDUnknown “Error creating monitored item on the server. BadNodeIdUnknown” Please let me know if you have any suggestions. Thank you.

I have exactly the same problem (but with a virtual controller). Could you solve the problem?