What does a CHECK WING A/I message on the MCD indicate?

The CHECK WING A/I message on the MCD indicates that there is a discrepancy between the wing anti-ice selection and what is presented in TOLD DATA 2. This situation may arise if the crew sets the wing anti-ice switch in a different position compared to the parameters shown on the MCD. The system issues this message to alert the crew to verify and ensure that the wing anti-ice system is set appropriately for current flight conditions, which is crucial for maintaining safe aircraft performance in specific environments, especially those that may lead to ice formation. Ensuring consistency between the selection and the displayed data helps prevent potential ice-related issues during flight.