How do i go back and enter my 2018 agi on my already submitted 2019 taxes

[DoninGA]

There is no need to enter the 2018 AGI again if your 2019 tax return was e-filed and accepted by the IRS.

[Bjbarker09]

Even if I got an email saying my return was incomplete because of it? It was also accepted 

[DoninGA]

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@Bjbarker09 wrote:

Even if I got an email saying my return was incomplete because of it? It was also accepted 

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If this was a TurboTax email, it was probably sent in error since your federal tax return has been accepted by the IRS.