Understanding CMD Object Presence in Quote API Endpoint Responses

Why is the "CMD" object sometimes missing in the response from the quote API endpoint?

The "CMD" object in the quote API endpoint response is included exclusively during the pre-market period if there is a change in volume. In scenarios where there is no volume change during the pre-market, the "CMD" object will not be present in the response. This specification is crucial for users of the API to understand when interpreting data from the quote API, especially in relation to pre-market activity and volume changes.