This happens when you choose the Self-Select PIN method- explained below
Solution: Verify the prior year AGI, especially if IRS made changes to last year's return after it was efile accepted. The AGI could differ from the return you efiled last year.
Workaround- don’t use that PIN method—use the ERO PIN method instead- see details below
ERO/Practitioner PIN:> This PIN is entered on the Main Info sheet of UltimateTax. When you use the PINs, you do not have to mail in the 8453 forms. The practitioner enters a PIN for the taxpayer and/or spouse. There is a check box under the taxpayer and spouse PIN for the tax preparer to indicate they were given permission to enter these PINs. Otherwise, the tax preparer actually turns around the keyboard and lets the taxpayer and spouse enter their own numbers. If the taxpayer and spouse enter their own PINs, there is no PIN form to print out and sign-- it is truly paperless. If the preparer enters the numbers into the computer, then the PIN form must be printed and signed by all parties, and retained on file per IRS rules.
This applies to all years of the UltimateTax software that can currently be E-filed.