I put the correct 2018 AGI amount in and it was rejected I am looking at my 2018 return now so I know the figure is correct

Your return may need something else corrected to electronically file your return.

Sign in to your TurboTax account.  You will see a button that says "Fix my return". 

Once you select that, the program will walk you through the steps or information needing to be corrected to fix your return. 

Please see the attached for additional information. 

How to fix a rejected return 

Just a wild guess here, but at any time since you filed, did you amend your return?  In many cases, that would change your AGI.  

Good luck!

To locate your Adjusted Gross Income AGI from last year, please follow these instructions:

If you have filed your last year 2018 tax return and have a copy of the tax forms, you may locate the amounts on line 7 on your 2018 Form 1040 or line 35 on 2018 Form 1040-NR if applies to you.

If you used TurboTax online to file, you can access your account here Login and download a copy of your prior year’s 1040 tax return to find your AGI.  Click here for instructions: Prior year's return

If you do not have a copy of the tax forms, you may order a transcript from the IRS.  Click here Get  Transcript and select  "Get Transcript Online "  On the transcript, look under section "Adjustment to Income" and find the amount for Adjusted Gross Income.

@obnurse849