You took the summarize option?
IRS requires details of your SELL transactions to be supplied on some Form 8949 ( get blank form from IRS and you fill it out by hand),
or on your other forms (e.g. consolidated 1099-B or spreadsheet) which have the same information and in the same manner as Form 8949.
Choose 'I'll type it in myself"
then it goes on your e-Filed 8949. no mailing is necessary.
