In our product documentation it is written that
If your local security measures require, you can change the user account and password under which the main Server services run.
You must have Administrator privileges to change the service account.
Note that the main Server services cannot run using the local system account.
Here then what is the problems with that account, when i did a search i came to know that
LocalSystem service can do things that would bring down the entire system or damage the entire system.
Does that the real problem?
Where do we can see that account.
I think the actual name of the account is NT AUTHORITY\System.