I had this same error and tried to submit this twice... no luck with TT.
I filled out all my 2020 info in Credit Karma and my Federal and State returns were accepted within 5 minutes. I am returning TurboTax to Costco and I am disputing the credit card filing charge TT charge me for the State fee and the optional Audit Protection.
I have been thinking about moving away from TT for a few years but kept coming back because all my info imported year after year. Now, am done with TT and is was not that difficult to file with Credit Karma... FOR FREE!
