I received a 1099B after I had already filed. What can I do? I was denied and corrected but have not sent it in yet.

[cameaf]

Since you e-filed your return and it was rejected by the IRS, your return is considered to be still in progress if you corrected your return and have not efiled again. You still have time to add Form 1099-B  

This link explains how to add Form 1099-B to your tax return in progress:

https://ttlc.intuit.com/replies/4789365