Predefined entry data structures for notifications user exits

When a user exit program is invoked, predefined data structures are passed to the program. These structures are used to pass information about the triggered notification that caused the user exit program to be invoked. In addition, the user exit program can return information through the same data structures so that it can be accessed in subsequent calls. Therefore, these structures must be defined in each user exit program so that the information can be recognized and processed. Your user exit program can then reference specific items of information in the data structures.