I believe it is a bug within TurboTax that prevents active traders with more than 1000 schedule D capital gain/loss sales from e-filing NJ state taxes. It is a typo in the sense that there is no such limitation for Schedule D number of transactions for NJ e-File (as far as I can tell, I have not found reference to any such limitation within the NJ state tax guidance documentation) which seems to be what is triggering the error here; and the error is indeed incorrectly reported as "Schedule B".
