This setting is basically the threshold when a player gets kicked for desync. If there is any kind of desync between the client and the server, this triggers an "illegal state". This setting determines when the player gets kicked, so if there had been more than 100 "illegal states" for this player during the session, he will be kicked from the server.
So if you don't want to get players kicked from the server in these cases, you can just set a high value there