State tax filing

You have a couple of choices on how to reflect your pension adjustment on your New Jersey return. 

If you use the desktop version of TurboTax, you can navigate to a screen called Pension, Annuities and IRA withdrawals in your New Jersey return, and enter the additional pension income on that worksheet. It will look like this:

Your other option is to file your federal return first, then go to the pension entry in the federal section of TurboTax, and change the taxable amount to the correct number for New Jersey, then file the New Jersey state tax return.