Hi Kari,
When you’re mapping OPC UA variables from a 3rd party server, make sure to pay particular attention to the Namespace as well as the NodeID. All parts of the address need to be correct in order to read the data. As an example, take a look at this post for some tips: Mapp View with External OPC UA Servers (LENZE, SIEMENS) - Share Info & Ideas - B&R Community