IEC 62769-100:2023 is available as IEC 62769-100:2023 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 62769-100:2023 specifies an FDI?[1] profile of IEC 62769 for Generic Protocols. That means that all interfaces are defined and a host can add support for more protocols without changing its implementation. Nevertheless, there are some protocol specific definitions (PSD) that need to be specified per protocol using this profile. Annex C specifies what PSD need to be defined per protocol so that FDI? Device Packages, FDI? Communication Packages for Gateways and FDI? Communication Servers, FDI? Communication Server, Gateways and Devices supporting such a protocol can work together in a host not aware about this specific protocol.