Get your taxes done using TurboTax

Do you have anything else listed in the investments section beside the liquidating distribution?    If this is your only investment sale, you entered the transaction as a summary instead of individually.    If you choose to enter summary data, you must attach a 1099-B, which you don't have.   So, delete the 1099-B transaction you previously entered and re-enter the same info, except this time, choose the option to enter sales one at a time.   Once you do that, the request for the 1099-B upload will go away.   You can't edit to fix it, you have to delete your summary entry and re-enter it as one individual sale.