Hey, I do not know exactly what they are, but it seems there are two fields you are supposed to put your TIN and Officeally’s TIN, so I thought you might have missed some info during the initial setup. Try to log in with admin, and make sure all info related to your practice are there, then go to practice tab–>X12 partners where you can put your tax ID and that of OfficeAlly. Hope that helps.
Actually it does help.
I did go back and added office ally as x12 partner, but even before that, it turns out the generated file was correct and office ally did accepted it. I had made an error when I uploaded the very first file.