An application data storage area generation method that is executed by a processor includes, (a) generating an application data storage area including a data structure area where data of an application is stored, in a user data storage area shared by a plurality of user accounts, in response to a utilization request for the application, (b) generating, in the user data storage area, role information including a plurality of roles for which access control information on access to a data structure of the application is set, and (c) storing, in the user data storage area, information on association between the plurality of user accounts and the plurality of roles included in the role information.