In an information processing terminal, a web browser, if instructed by a user to call a function for specific data managed by a client, identifies second function information for adapting the specific data to a type processable by a first function called by using first function information belonging to a category corresponding to the function called by a user's instruction. The web browser issues a request for processing the specific data processed with a second function called by using the identified second function information, with the first function, and receives a processing result of the requested processing.