What does "Form 1099-B Worksheet. Cost or Adjusted Basis must be entered" mean?

Could you import directly from your broker in stead of doing manually? To avoid possible error by doing manual calculation and entering, I let Turbotax direct import from Morgen Stanley accounts, suprised had the same issue.

I encountered the same problem. Went back to the Wage & Income section, select 'stocks, cryptocurrency, mutual funds, bonds, other' section, and found need review sign next to two transactions. It turned out Etrade does not report the cost basis when you did a sell put and let it expire. Entered '0' as the cost basis, and it passed the check.