@Zane32962
IF you filed a NC tax return for 2020 (or any earlier year too), it was a D-400 form. Even if it was e-filed, the data went in "as-If" it was a D-400.
IF you go into your TTX account, and go to your 2020 tax file and download the PDF file, the NC tax return it contains will be the D-400.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
