I prepared a Form 1041 for a Trust and summarized stock transactions on Form 8949 & Schedule D.

I EFiled the tax return and it was rejected because the PDF file was too large. There are multiple Wash Sales & Non-Covered transactions, as well. I now plan to send the Form 1099-B by mail.

I would like to know if there is a form for mailing with the Form 1099-B, along with an address. Thank you.