USCIS Policy Memo on RFEs and NOIDs

"The purpose of this policy memorandum (PM) is to clarify the role of Requests for Evidence (RFEs) and Notices of Intent to Deny (NOIDs) in the adjudication of petitions, applications, and other requests. It revises Chapter 10.5(a) of the Adjudicator’s Field Manual (AFM) – AFM Update AD12-04." - USCIS, June 3, 2013.