This report presents information on possible changes to the joint implementation (JI) guidelines, drawing on: recommendations by the Joint Implementation Supervisory Committee (JISC); the views of Parties and admitted observer organizations on how the JI guidelines and other decisions of the Conference of the Parties serving as the meeting of the Parties to the Kyoto Protocol (CMP) pertaining to JI should be revised, as submitted in 2012 and 2013 in response to requests by the CMP at its seventh and eighth sessions; and the experience gained by the JISC and by stakeholders in the implementation of JI