Same question that someone else posted--trying to correct a 2018 excess deferral to a 401(k) when Turbotax's software's fix refers to it as 2017 income instead of 2018

Have been on hold 40 minutes waiting for a TurboTax specialist.  As someone else posted:

"Steps to Take to Remove an Excess Salary Deferral", on step 4 it indicates I should:

4. Report the excess deferral on your 2018 return in the Income section for Retirement Plans and Social Security whether or not you received a Form 1099-R before you file your return. Enter as much information as you can. Report the excess deferral amount in boxes 1 and 2a, and use code P in box 7. Indicate that this is a 2019 Form 1099-R.

However, code P indicates that the excess contributions were for 2017. Should I use code 8 in box 7 instead? If not, how do I indicate that this a 2019 1099-R substitute form?"

I have the exact same question.  I tried the alternative offered to the other person to add it to line 1 income by using the "miscellaneous income" section, but then TurboTax kept telling me to correct the amount listed in my W-2s since it was over the maximum amount.  Without doing that, it wouldn't let me e-file.  Since the amount shown is correct, I don't want to change it although I recognize that by adding the miscellaneous income I've corrected the underlying problem.