How to correct an AGI extension error when there is no link in the rejection email? Can't find the info to correct or resubmit on the website without doing full return.

[stephris]

I put the wrong AGI in my extension. Rejection email came through just after midnight after deadline, and it says...

Your Federal Personal Extension has been rejected

Dear TurboTax customer: 
 
This happens from time to time, but we’ll help you fix it. 
 
What happened? 
 
'PrimaryPriorYearPIN' or 'PrimaryElectronicFilingPIN' or 'PrimaryPriorYearAGIAmt' in the Return Header must match the e-File database.
 
What does this mean? 
 
Make sure you submit a new extension application before the filing deadline. 

[JulieR]

The following instructions explain where to correct your AGI. https://ttlc.intuit.com/replies/4168567

[sparkyclark1]

where do i find my agi

[DMarkM1]

Primarily you will find your AGI on your 2018 tax return.  Look for line 7 on the form 1040.  Here is a link with other options if you don't have access to your 2018 return.