Several functions are defined for the session management exit routine. All functions except the begin function are optional. A function code indicates which function the exit is to process and determines which parameters VTAM® passes to the exit. Function codes are described in Function code and related session information. The parameters VTAM passes to the exit routine are described in the information that follows.

Table 1, Table 2, Table 3, and Table 4 provide a summary of the parameter lists. Descriptions of the parameters begin at Parameter descriptions. The parameters are described in the order in which they appear in the parameter lists.