1. An information processing method, comprising: analyzing XML data corresponding to a form screen, and specifying a business class corresponding to a tag included in said XML data; referring to a business class manager in which items of said business classes to be created are registered, and judging whether an item of the specified business class has not been registered in said business class manager; and if said item of the specified business class has not been registered in said business class manager, registering said item of the specified business class in said business class manager.