If a previous year's AGI was rejected but is shown as blank on the return transcript, what are the next steps to fix or receive the correct number provided one exists?

[DoninGA]

If your tax return continues to be rejected with the 2018 AGI then enter a 0 (zero) for the AGI and e-file again.

If this is also rejected then you will have to print and mail the tax return.

See this TurboTax support FAQ for printing a tax return for mailing - https://ttlc.intuit.com/community/printing/help/how-do-i-print-and-mail-my-return-in-turbotax-online...

[asteio]

I first entered a zero as it would not allow me to input a blank box.