see attached pic.
Does your $20,500 elective deferral appear on Part I line 6a - No
Does your employer contribution appear on Part I line 6e? No
Does Part III line 5 show more than $4,100? (Line 5 would have to be more than that to be eligible to deduct more than the $20,500 elective deferral.) There is no part 3, line 5, I attached pic
