Receiving Answer Area Information from a READ

When you invoke IXLLIST, list services return information related to your request in the answer area specified used the ANSLEN and ANSAREA parameters.

Under certain circumstances, answer area information is not valid. See Determining if the Answer Area is Valid for information on how to determine whether the answer area information is valid.

The following list describes the information returned when the answer area is valid. The answer area is mapped by the IXLYLAA macro, which is presented in z/OS® MVS™ Data Areas in the z/OS Internet library.

LAARETCODE: The return code from the IXLLIST service. Return code values are defined in the IXLYCON macro.
LAARSNCODE: The reason code associated with the return code from the IXLLIST service. Reason code values are defined in the IXLYCON macro.
LAAREQC_MONITORINGACTIVE: A flag to indicate whether the user is currently monitoring the event queue for which the system is returning information.
LAAREQC_DRIVEEXIT: A flag to indicate whether XES is to drive the connection list transition exit when the user's event queue changes from empty to non-empty.
LAAREQC_VECTORINDEX: The vector index associated with the event queue being monitored.
LAAREQC_EMCQUEUEDCNT: The number of event monitor control (EMC) objects that are queued to the event queue.
LAAREQC_EVENTTRAN: A count of the approximate number of empty to non-empty event queue transitions that have occurred.