The paper then identifies possible changes needed to the UNFCCC reporting framework in the post-2020 period, to ensure the provision of information adequate for the purposes of understanding and tracking progress towards both nationally determined contributions (NDCs) at the country-level, and collective climate-related efforts for mitigation, adaptation and climate support. Transparency and completeness have tended to improve where reporting has benefitted from regular feedback through review processes (e.g. review of inventories and National Communications from Annex I countries), and where there is a regular reporting system in place in the country (and underlying measurement or monitoring system). In general, reporting (particularly of emissions inventories) has been improving over time, as countries have gained experience and increased their reporting systems and capacities.