I had the same issue. I was able to obtain the cost basis and acquisition dates from the financial institution. I followed these steps and selected "something other than a date" then "blank" then "the cost basis is incorrect or missing" and then on the next page, I selected "I know my cost basis and need to make an adjustment" and entered the cost basis. I am still getting an alert that this needs to be reviewed. Should I have entered this in as 1E even though it is not technically on my 1099?
