In a data processing system, a document transmission apparatus capable of transmitting acquired data, a computer system including a data management unit for storing and managing data and a data storage unit for performing a process of causing to store the data transmitted from the document transmission apparatus in the data management unit, and an information processing terminal to be used by a user are connected through a network. In this system, the data storage unit comprises a storage destination acquisition unit adapted to acquire storage destination information of the data stored by the data management unit, from the data management unit, and a notification unit adapted to transmit, to the information processing terminal, a notification to which the storage destination information acquired by the storage destination acquisition unit has been added. Thus, it is possible to reduce a load on the network and improve security.