In accordance with embodiments, there are provided mechanisms and methods for synchronizing data using data identifying messages. These mechanisms and methods for synchronizing data using data identifying messages can enable embodiments to provide notification of a need to synchronize one instance of data with changes made to another instance of data, without necessarily communicating the changes to be made to the other instance of the data. The ability of embodiments to provide synchronization based on such a notification can allow more efficient data synchronization while ensuring that synchronizations are based on up-to-date information.