If your return is accepted, you must amend your return to include the
W-2 form. Amendments are a paper process. To amend a return in
TurboTax, follow the FAQ: https://ttlc.intuit.com/questions/1894381-how-to-amend-change-or-correct-a-return-you-already-filed.
Note that the 2014 1040X form will not be ready until Mid-Feb; the 2014
instructions will not be available until the form is released.
If your return is rejected, simply go back and add the W-2 form prior to resubmitting your return.
