This note provides information that may facilitate discussions by Parties on the potential consequences of tools, policies, measures and methodologies available to Annex I Parties in their efforts to mitigate climate change. It contains a description of a possible approach to group actions (e.g. policies, tools and measures) that may lead to either positive or negative consequences. This is followed by a detailed description of the various tools, policies and measures as well as their associated consequences. The note also contains information on possible ways, including those proposed by Parties and relevant organizations, to take action on negative potential consequences. The note also mentions possible role players outside the UNFCCC process that could undertake activities to deal with potential consequences