please help explain the on-line status update

I just got updated info. from my on-line status about I-485. what does this mean "we
mailed a notice requesting additional evidence or information in this case.
The notice explains in detail what additional material is needed. "
I am pretty sure I filed all the documents they need. Does this mean it is a FP notice? What does the FP notice usually say on-line?
thanks

所有跟帖: 

Yes,if you are required a fingerprint,the information -xiaobaitu- 給 xiaobaitu 發送悄悄話 xiaobaitu 的博客首頁 (24 bytes) () 03/17/2006 postreply 16:31:25

thank you, xiaobaitu. could it be REF as well? a liitle worried -happycat0912- 給 happycat0912 發送悄悄話 (0 bytes) () 03/17/2006 postreply 16:41:42

請您先登陸,再發跟帖!