The Subsidiary Body for Scientific and Technological Advice (SBSTA) agreed upon guidelines for national systems for the estimation of anthropogenic emissions by sources and removals by sinks of all greenhouse gases not controlled by the Montreal Protocol under Article 5.1 of the Kyoto Protocol (see annex), and decided to prepare, at its thirteenth session, a draft decision on this issue to be recommended for adoption by the Conference of the Parties (COP) at its sixth session.