(12)In view of the entry into force and application of Climate Delegated Act by the end of 2021 and material difficulties for assessing compliance of economic activities in 2022 with technical screening criteria laid down in that Delegated Regulation for the previous reporting year, the application of this Regulation in 2022 should be limited to certain elements and qualitative reporting, with the remaining provisions starting to apply from 1 January 2023 for non-financial undertakings and from 1 January 2024 for financial undertakings. Moreover, the key performance indicators of credit institutions related to their trading book and commission and fees for other commercial services and activities than the provision of financing should apply from 1 January 2026.