Please provide your valuable suggestions.
I have transferred my H1b to X employer with an in-house project and it got approved. But after 10 days I got an opportunity with end client and joined there without amendment. My in-house project location and end client location are different. My employer later realized and applied for an amendment, but he applied after one month I joined at end client. Now I got an RFE, says USCIS found that I have been working at end client prior to filling my amendment. This they came to know from Vendor’s work order, also I didn't submit my client letter when I filled my amendment. Can you please suggest me how to reply to RFE or are there any alternate ways for me?