Gstr1 missing invoice for the month of jul17

Respected Sir,

I have a Firm Which Proprietorship, Sir my question is my consultant is file GSTR1 for the month of july17 but Some Invoice Is missing like my total number of B2B suply 1366 and Uploded only 638 rest is missing. but GSTR3B filed correctly.

Please suggest know how to add missing invoice in GSTR1 and my supplyer is take input benefit 

Thanks & Regards

Sumit kumar

9818184321