B: The basis shown in box 3 of Form 1099-B is incorrect. For example a wash sale is unreported on Form 1099-B, because the original purchase was a noncovered security and the replacement purchase is a covered security. The basis reported on Form 1099-B for the covered security will not include the disallowed loss from the sale of the noncovered security.

O: The proceeds shown in box 2 of Form 1099-B is incorrect. For example a covered security is delivered upon the exercise of an put option and the put option was purchased prior to 2011.

T: The type of gain or loss (short-term or long-term) shown in box 8 of Form 1099-B is incorrect. For example a wash sale is unreported on Form 1099-B, because the original purchase was a noncovered security and the replacement purchase is a covered security. The covered security is held for one year or less, but the sum of the holding period for the covered security and the holding period for the noncovered security subject to the wash sale disallowance is greater than one year. The gain or loss will be reported as short-term on Form 1099-B, but the transaction will be reported on Part II (Long-Term)of the Form 8949 Worksheet with Code T in column B.

W: You have a nondeductible loss from a wash sale.