it doesn’t have to be something bad it gives you the opportunity to complete document which they do not have misplace or whatever but in the letter it will determine what it is they are looking for to make a decision on your case.

RFE is for the issue with the birth certificate. The things is I registered my birth certificate after 16 years of my birth. they are asking some more evidence that with my dad name, my name and also something that indicate my date on birth on that. also can I submit by response to RFE through online