We is it telling me my ss# is a duplicate how can I go back and correct it

[staysafe100]

how can I[ go back and change info on my return if it did not go through

[Anonymous]

if you did a non-filers return or someone already filed using any SSN on your return all you can do is paper file.  if you think you are a victim of identity theft file form 14039. 

https://www.irs.gov/pub/irs-pdf/f14039.pdf

[xmasbaby0]

Did you use the non-filer site to get a stimulus check?  Lots of people ignored the warning not to use that site if they planned to file a return.

https://ttlc.intuit.com/community/tax-topics/help/stimulus-how-to-file-your-return-after-getting-rej...