The Open Charge Alliance has released an errata list for OCPP 2.0.1. This document is a collection of resolutions to issues and questions regarding OCPP 2.0.1 that were discussed in the OCA Technology Working Group between April 2020 and September 2021.
The errata do not affect any schemas of OCPP messages. Certain errata do contain changes to requirements or even new requirements, but only in cases where a requirement contains an obvious error and would not or could not be implemented literally. New requirements were only added when they were already implicitly there.
This document can be found in the download section for OCPP 2.0.1 on this website. It is possible to download the entire set of files for OCPP 2.0.1 including the new Errata list or just the Errata list as a seperate file. You can select your preference in the pull-down menu.