The Microsoft Flight Simulator for Xbox does not yet support the iniBuilds Airbus A350. The Xbox version is currently being tested and optimized to guarantee a seamless experience on the console, even though the aircraft has been made available to PC users on both MSFS 2020 and 2024.
Some default or 3rd-party aircraft may not fully simulate the TO CONFIG function yet.
Set up an improper config (e.g., flaps retracted, spoilers armed).
Press the TO CONFIG button.
You should get a Takeoff Configuration Not OK warning and details on what’s wrong.