unsupported charge rate unit

[lappy4711]

I get
[MO] warning (SmartChargingService.cpp:587): unsupported charge rate unit
in the micro ocpp simulator logs (running the docker image) followed by rejected
I use A as chargingRateUnit.
I assume A is supported....so what could be wrong?

[huntc]

I'm reaching the conclusion that current is not supported.