
This is the dreaded error that people who tried to preorder using AT&T Next were getting. It is also the order that they continue to get, ordering through Apple.com, if they happen to be in the New York or Wyoming markets. Why then, was I getting it in the Boston, MA market?
I must have spent a cumulative 4-5 hours on the phone with AT&T and Apple, but we finally found an answer (which I was just yesterday also able to find on AT&T's official forums). It boils down to the account having been opened in a different market from where the phone is currently used. And it is only happening in some specific cases, not all. Effectively it is a bug within AT&T's authentication system and Apple has no control over it. If you are getting this bug, your only option is to order through AT&T or from an AT&T core store, at least until the bug is ironed out.
I had a high level rep eventually call me from AT&T and explain this. Bummer. Wasted so much time in lines, calling, looking up in store availability, when it was never meant to be.
I am posting this here since I finally found an answer, not as a form of complaint. It is what it is, and I figured someone with my issue might come across this thread. Perhaps I save you a minute, and hour, or more. Anyway, doesn't seem like one of my lines will be getting a 6+ any time soon.