I have applied for my first H1b ( I am on OPT ) this year. I am working in Employer>Vender>Client model. I got RFE for employer-employer relation ship, I asked for SOW and contract between my Vender and Client but its vender is not willing to provide such agreements. When I reach to client for employement verification letter, they are not ready to provide such letter instead they provide an email stating that I am working with them as an contractor for XXX company(vender company), my project is already funded for this date with further chance of extension for another 6 months. I got letter from vender. Is it sufficient for this kind of RFE? what are the chances of getting Approval? Does USCIS gives another RFE or they will just denies the petition? Thanks a lot in advance for your time and suggestion.