Solved
The cover sheet for the brokerage filing report from TT says to attach the 1099B forms (multiple stocks traded) to a 8453 and send it to the IRS ( I am e-filing). BUT the IRS does not list such documents in their 8453 list of documents they will accept. Does that mean I cannot e-file my 1040?
Yes, you can still e-file. You should also be sending Form 8949 Sales and Dispositions of Capital Assets along with Form 8453. Check the box for Form 8949 and the additional documentation (summary statement and/or 1099B forms) are the supporting documents that you will also send to support Form 8949.
The link below contains a good summary of these mailing instructions under Step 2
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.