The Paris Agreement states that all Parties shall pursue domestic mitigation measures to meet their NDCs, and that methodological consistency is needed between the communication and implementation of NDCs. It remains unclear what information is to be reported on domestic mitigation measures and what methodological consistency means in practice. Parties are invited to communicate such strategies to the UNFCCC Secretariat by 2020. Parties shall also participate in a facilitative, multilateral consideration of progress with respect to achievement of NDCs.