The system discards all pending messages and outstanding WTORs. Any WTO, WTOR, and DOM macros may not be processed. All time sharing option extended (TSO) application programs in real storage abnormally end if they have unanswered WTORs. Some system storage might be unusable. If DUMP TAKEN appears in the message text, the system writes an SVC dump.
If an IPL is required, quiesce the system before doing the IPL.
Communications task (COMMTASK)
IEAVSTAA
2,10
11