Business & farm

Enter the 1099-S in the Stocks, Mutual Funds, Bonds and Other interview in Personal > Personal Income > Investment Income - the interview assumes you will have a Form 1099-B, but this is where you enter a Form 1099-S.

There is no special interview in TurboTax for Form 1099-S - it is entered in the Stocks, Mutual Funds, Bonds and Other interview of Investment Income and is not a Form 1099-B.

In the Stocks, Mutual Funds, Bonds and Other interview, answer "No" when asked "Did you get a 1099-B or other brokerage statement for these sale?"  Then, enter the "farm" sale information from the 1099-S.

In desktop versions of TurboTax, the screen looks like the following: