Thread:NoWayThisUsernameIsAlreadyOwnedBySomeone/@comment-24335865-20150613194744/@comment-26143371-20151128234952

The variable "UserVersion" is 0 in my town, so I would go with the Level 15 requirement.

The variable seems to be set server-side, so I can't say what it is for other users or when it changes.