I seem to remember running into something like this several years ago.
NOC is written in Java. When NOC starts up, via a Java function call
it asks the Operating System what is my hostname. The OS goes about
that however it does. My guess is that you have a short version in
your hosts file (ie: c:\windows\system32\drivers\etc\hosts. or
/etc/hosts), or the other way around, meaning long name. I could even
be order of precedence if you have both short and long in the host file.
I would try to match what is in the customizer, host file and BEM
adapter settings.

My guess is, that you will be able to resolve this, but if not, reach
out to support and they can assist further.

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