Specifically when using Aerosoft A320 aircraft, once the fuel truck has arrived and connected up, I get the response "Please use the refuelling system of your aircraft to refuel".
I have entered the block fuel into the aircraft's FMC, but I keep getting this response and cannot proceed any further as I am not sure what else this requires me to do.
The Aerosoft manual advises not to use FSX's Fuel and Payload section to load fuel figures, but to use their own Airbus X Fuel Planner.