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Why does OPC-UA Read/Write not throw errors on "Bad" results?!?

In using OPC-UA, I tried writing to a node that was Read-Only.   I got no error, even though it failed!?!  I see there is a "status" output that actually carried the error code "Bad_NotWritable".

 

Why in the world does this library ignore all LabVIEW convention and not integrate error codes into the Error cluster output?  Trying to do something and failing is what we call an "error", not a status.

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