"The form requires you to list your Character Name and World for every ticket purchased. If an attendee does not have an in-game character, or wishes not to share their character name, please select the “I do not have a character” option under Data Center. The name you list in the Character Name field will be printed on your badge, so be sure to spell this correctly!"

It should have listed the world you were on, not the Datacenter... Someone somewhere messed up.