I efiled, and mailed 8453 form. it seems I filed an incomplete 8453 for one broker, how do I correct that?

[nssuffill]

All they really want is 1099 B from the broker  that shows your trades results, attach the broker statement to form 8453 and mail to the address at the lower right side of 8453.

[nssuffill]

 attach your broker statement to form 8453 and mail to the Austin TX address , located at the lower right side of form 8453.