Extension filed & accepted 7/15/20, went to file return and I get this message: "Submission must not be a duplicate of a previously accepted submission." How do I fix it?
A return has already been filed for the SSN/EIN.
Did the client use the Non Filer site to get the stimulus?
Did you verify you checked the "First Extension Ready to EF" e-filing and not accidentally efiled the return?
