Return no errors. Form 1099-B Worksheet shows line #19: Calc.ed Results: "This sale is missing info?" & 3 lines grey boxes. 13th box 2nd line "x" What does this mean?

[KathrynG3]

Yes, this can be corrected.

In my attempt to duplicate your results, I discovered that I did have the 13th box of the second row checked with a message on line 19 that the sale was missing info.

I recommend scrolling up to Line 1a and entering the Form 8949 Check Box that corresponds to your holding period for the transaction. 

Go to 2019 Form 8949 Instructions page 3 for more information. See the screen below for the 6 options: