guessing its to do with NY State Tax/Company laws . Wasn't there when I last ordered in December 2012 that I can recall - or maybe I just put 9999 in there... same for tax id... But I have no idea how the NY tax system works, or the US tax system for that matter.. so best to clarify with someone who has a clue which is not I
But spot on that the order form is cryptic and offers absolutely no inline help/assistance with those fields, what to enter, why, and how to provide a generic one where they do not apply (such as 'leave blank' etc..)
Edit: Actually seems that there is NO input validation on those fields... even though they are marked as mandatory with the asterisk, leaving them blank makes no difference to the forms ability to be submitted.. so just skip them maybe.
Either way - best to ask the people that want to take your money. [email protected] or skype call them during Brooklyn Business Hours M-F ...