For the Sunlight Group EMS energy meters are installed 'in reverse' when they count export / production / discharging as a positive number, and import / consumption / charging as a negative number.
For stable functioning of the control system, it is important that the Sunlight Group EMS knows when an energy meter is installed in reverse.
You can indicate in the settings of the energy meter in the 'Devices tab' that an energy meter is installed in reverse.