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Full explanation, your server has reached its maximum for total population, example total say of 10,000 players. Wait times here can be much more frustrating to create a new character because you must wait until people delete their toon to free up space, which can be forever looking at you Gilgamesh, Leviathan, Moogle servers. Will always get 3079 because of max amount of toons have been created on that server.

Then if you cant log-online, its because out of those 10,000 players, 8 thousands odd players are playing simultaneously, so you must wait till some of them log off the server so you can log in. These waits can be anywhere from 5 minutes to 5 hours. Will always get the 1017 error for odd players are playing simultaneously