Nonetheless, the ministers left many issues unresolved to be concluded by the next COP in Mexico City, such as the
global targets and timeframe for halting deforestation and for finance (which in previous versions were suggested to be 50 % by 2020 and to halt gross deforestation by 2030 and targets to provide finance amounting to $ 15 - 25 billion by 2020), the institutional arrangements (such as market versus public finance mechanisms, a forest emissions inventory, reference
levels and a national or international registry),
sub national reference
levels for initial phases, the measuring, monitoring and verifying (MRV) systems and benefit distribution mechanisms.