I don't know when you e-filed, but I do know that TurboTax had issues earlier in the season with delays in state forms availability. If forms weren't available, TT couldn't e-file your NC return.
You can, of course, still e-file your NC return as long as your federal return has been accepted. The instructions are in the TurboTax FAQ linked below.
How do I e-file my state after I already filed my federal?
*** I am NOT a tax expert. I am a seasoned TurboTax user, and volunteer to provide assistance to TT users. Nothing I post is to be considered TAX ADVICE; I bear no legal liability for responses.***
