newly commissioned AIO (calibrated) discharging 20¬50W to grid?

Hello all , newly commissioned AIO (calibrated) is constantly discharging 20 to 50W off to grid? - is this normal?

Thanks!

Usually it fluctuates between importing and exporting a few watts. (It is constantly reacting to changes in house load and tries to match battery activity, but it can never be exact.)

It's possible the CT clamps aren't perfectly calibrated, so that when the smartmeter reports 35W export, the CT clamp reports 0 ?

Oh - seems to be a duplicate of
https://community.givenergy.cloud/d/4414-newly-commissioned-aio-calibrated-discharging-2050w-to-grid