If you have correctly entered the 2016 AGI as shown on the 2016 tax return that was filed and accepted by the IRS and your 2017 tax return continues to be rejected by the IRS for an incorrect AGI, then the problem is with the IRS database for 2016 AGI's. This is not uncommon and you will not be able to correct the problem. The tax return will have to be printed and mailed to the IRS.
See this TurboTax support FAQ for the procedure to print a tax return for mailing when using the desktop CD/Download editions for Windows - https://ttlc.intuit.com/questions/1943980-how-do-i-print-and-mail-a-return-in-the-turbotax-for-windo...
