I had this same issue so after some investigation I think I may have found a solution. I’m not sure if this is the right way of doing this so would love feedback from others.
I noticed that if you enter a value for box 1g for disallowed wash sales, TurboTax will automatically select “Sale includes a disallowed wash sale loss (code W)” on the Capital Gain (Loss) Adjustments Worksheet. I tested this by entering values of 0.49 or lower in box 1g and the field was deselected. When I changed box 1g to 0.50 or higher, the field was selected and the value was rounded to the nearest dollar. Once this field was set, you didn’t have the option to deselect or change the value on the Worksheet when viewing in the forms mode.
I suspect what happened was when I was verifying the amounts imported from the broker, I was selecting the check box that said something along the lines of “this sale includes disallowed wash sales” which overrode the TurboTax autodetection mechanism and “Sale includes a disallowed wash sale loss (code W)” on the Capital Gain (Loss) Adjustments Worksheet while leaving the amount field blank.
I believe to resolve the errors, you just need to uncheck the “Sale includes a disallowed wash sale loss (code W)” for any amounts less than 0.49. You can do this easily when going through the Smart Error Check. I’m thinking since the amount is rounded down to 0, and there is no adjustments being made, there’s no reason for this boxed to be checked.
I hope this helps and hope someone from TurboTax can confirm my findings.
