Thank you, 

I just checked the W-2 again. Box 12a is "S 1649.96". Retirement Plan box is checked in section 13. I'm wondering where the 3401.44 comes from? Maybe that is the error the IRS said that it corrected with the employer? The message was "We didn't allow the amount claimed in a deduction for self employed SEP, SIMPLE, and qualified plans on your tax return. Your employer has already adjusted Box 1 of your Form W-2 to exclude this amount. (1610) 

Sure do appreciate the feedback, thank you!

Dawn