E-file pin from 2019
I E-Filed my 2020 taxes but they were rejected with the reason code that my AGI or pin does not match what's on file with the IRS. I am entering my AGI directly from my 2019 return, so I'm sure that is correct. This year when E-Filing it prompted me to select a 5 digit pin # so I did. I do not remember what pin I used last year to E-File. How can I fine that # so I can try to E-File again?