This final version of guidelines has been produced following two years of field testing of the provisionally released version in May 2006. This document details the Best Interests Principle, the qualifications for the Best Interests Determination (BID) among refugee youth UNHCR oversees, and the ways in which UNHCR makes decisions in the BID procedure. Service providers in the U.S. working with unaccompanied or attached refugee minors may find this informative.