It basically depends on your account name. You account name must either be in violation of the rules or reveals personal information before we will change it.
If your name fails under those requirements then we will ask you for 3 alternative names that fall within the Player Code of Conduct (PCoC). We will then select one of those three and inform you of the changed name. Names that are outside of the PCoC will be rejected as will names that are already taken by other players.