Must I attached 1099-B to return for filing when I've entered sales in the aggregate, not individually?

[Anonymous]

if they're all of the type where sales price and cost basis are reported to IRS and there are no adjustments then the IRS doesn't want or need the detail.

if cost basis is not reported and/or an adjustment such as a wash sale then the IRS wants the detail.   this can be done by using form 8453 and check the 8949 box.   this way you can still e-file. 

read the instructions for the form because you must mail a copy in with the 8949 detail

https://www.irs.gov/pub/irs-pdf/f8453.pdf