Nope, same answer as on your other post:
16000 is a reserved port, so it can not be used by anything else. If something is using it, they did a very poor job of checking for reserved ports...
I suggest you establish some kind of port redirection.
Reserve a custom port (let's call it XXXXX) for the FM Admin Console in your environment.
If your FMSA12 is located behind a firewall, establish a port forwarding XXXXX => 16000 on the firewall. Depending on your environement you could even install a dedicated firewall just for your FMSA. There are also ways and solutions to do the same by means of software.
I sometimes use this method to obfuscate the presence of certain services on a network.
Usually I run into this problem not because something else is using port 16000, but because a firewall is blocking it. But most server firewalls don't block VNC ports for remote management, so I can usually just screen share the server and then access it locally using port 16000.