It was my Federal e-filing PIN which I received last year, June 2022. After a half hour working with trying to find the answer within the TT help community and playing with the software, i figured it out by going to the FILE tab at the top of Step by Step view. . The information is entered there.
It would be helpful if Turbo Tax (I use Deluxe) would have a pop-up or some other direction saying this information in entered under the File (your return) tab in Step by Step view.
