agners
commented
1 year ago It seems that the implementation in C++ is currently non optional (there is no compile time option it seems): https://github.com/project-chip/connectedhomeip/blob/v1.0.0.2/src/app/clusters/basic-information/basic-information.cpp#L255-L269
By default, the platform implementation reads the Unique Id from configuration, it seems: https://github.com/project-chip/connectedhomeip/blob/v1.0.0.2/src/include/platform/internal/GenericConfigurationManagerImpl.ipp#L499-L512
I'd have to dig into how this is implemented for ESP.
Most real devices do not return a Unique ID. Return an empty string in our example app as well.