Form 1099-B imported from Vanguard Corporation: "Accrued market value should not be 0.
Enter disallowed under wash sale rules or leave blank if entire loss is disallowed."
The computer doesn't let me delete the 0.
The error messaging you are seeing with regard to the wash sale entries is a result of automatic rounding of the number imported from your broker or typed in by you. If the wash sale adjustment is $0.49 or less, then it is automatically rounded to zero. This type of rounding is allowed by the IRS. Unfortunately, zero is not a valid value for this field -- thus the error message.
To resolve the issue, you can edit each individual transaction and delete the amount entered in the wash sale adjustment if it is $0.49 or less. This will clear the error message.
To do this, you will need to revisit the input section for the Form 1099-B transactions. Use the following steps: