When the list transition exit gains control, it receives the following information in the list transition exit parameter list (LEPL), mapped by the IXLYLEPL macro:

LEPLCONTOKEN

The connect token returned from the IXLCONN invocation that established the list transition exit.

LEPLCONDATA

Connect-time data you specified when you issued the IXLCONN macro to connect to the list structure. The use of this optional field is user defined. One possibility is to store a pointer to your connection's control structure.

LEPLEVENT

Event code indicating a list transition, event queue transition, or both occurred.

LEPLVECTORTOKEN

Token representing the user's list notification vector.

See z/OS® MVS™ Data Areas in the z/OS Internet library for a complete listing of the IXLYLEPL macro.