急問！485被退回

我是NIW 140 和485 concurrently file to NSC,(delivered on 7/2).
140 收到receipt. 485 今天被退回， 說要'

require a derivative petition be filed on behalf of the beneficiary. This petition may be one of three form: a Form I-140 concurrently filed with the I-485. if the derivative petition for your I-485 is concurrently filed with the I-140, a corresponding form I-787 receipt notice is required.......
You may re-submit your application with the aforementioned supporting documentation and any required fees to your local CIS office for further processing....

問題1. 既然是140 和485 一起遞的, 問什麽還要140form?懷疑他們搞錯了.
問題2. 補完材料, 寄到哪裏? NSC 還是local CIS office?