Preparatory work were entrusted to the Drafting Group on Recommendation CM/Rec(2008)2 (DH-SYSC-REC) which held its 1st meeting from 23 to 25 May 2016. At the end of the meeting, the Secretariat was instructed to prepare the document that was presented to the DH-SYSC at its 2nd meeting, on the basis of the detailed structure and guidelines adopted by the DH-SYSC-REC.