We submitted our marriage certificate to the USCIS with form I-485, but they're asking for another. I really have no idea why it was not accepted, I believe this was an error on their end. That's because we submitted the application for my wife's permit to work, and permit to travel - both were received and accepted. She got her Work Authorization card and also got her travel notice. Before we sent these three applications ( I-4895, work authorization, and travel permit) we scanned each of them. I have proof that the an original copy of the marriage certificate was in each packet. We signed all three the day we sent them. I signed my marriage certificate again, essentially, but if that was wrong then my other applications would need to have been rejected. Two were approved, one was not. What am I doing wrong here? Any advice would be greatly appreciated. Also, do we sign the RFE when we send it back?