IRS has not processed our 2020 amended tax return. I reported $0 on our 2021, and IRS rejected it. What can I do?

[fanfare]

Call IRS and ask them what the next step should be.

OR 

start with TurboTax Customer Support.

[Mike9241]

if you're trying to e-file 2021 using the amended return AGI, you're in error. you must use the AGI on the return that was originally filed.  if this doesn't work you'll have to mail the 2021 retrns.