Turbotax Premier Roth IRA contribution question

[brinkley2013]

This is my first year using TT.  I am subject to AMT and have a AMT Credit Carryforward.  I opened a ROTH IRA in 2020 and made a $7,000 contributions for 2019 and 2020.  My (M)AGI for regular tax and my AMT taxable income (not even sure if there is an AMT rule for Roth contributions) are both below the income thresholds for my age (>than 50 yrs) and filing status (married).  When I completed the IRA contribution section in TT, the software calculated a $420 penalty for an excess contribution.  I had to remove the entire $7,000 contribution in 2019 to remove the penalty.  Any ideas what is creating this problem?

[brinkley2013]

I will answer my own question, as I just found the answer.  There are apparently at least two criteria for ROTH contributions.  The MAGI income thresholds AND the type of income earned.  It believe my problems is I have no W-2 (line 1 of the 1040)  income.  I am retired, don't take social security and only have investment income.  ROTH contributions are subject to income thresholds and can't be greater than your W-2 income.  Problem solved.