What must be ensured if a pilot's altitude change request cannot be granted?

The appropriate response in this scenario is to ensure that the requested altitude is entered into the flight plan or coordinated with the next sector. This process is crucial because it maintains the integrity and continuity of the flight's operating profile. When a pilot requests an altitude change that cannot be granted, it's essential to accurately reflect this in the flight plan and communicate any relevant information to the next sector air traffic control (ATC). This allows for effective traffic management and ensures that all parties are informed regarding the aircraft's intended operation.

If the request is not accommodated, entering the altitude in question into the flight plan helps avoid potential confusion and maintains situational awareness among air traffic personnel. Coordination with the next sector reduces the risk of miscommunication or conflict with other air traffic, ensuring that safety and operational efficiency are upheld.