1040 X efile

[pattyrod]

how can I efile an amended tax i did follow the "how to do it", but still i got the message to fix the error on federal 

[dkh]

What year are you amending?

Did you prepare the original?

What was the error message?

[pattyrod]

amending 21

yes, i prepared it 

fail final review, because i am checking the amend return to file, if i do not check that box the transmission will not have the amended to transmit