An EPI command can fail for a variety of reasons:
With the exception of the first two cases, the EPI automatically recovers from EPI command failures.
In most cases, the command issuer receives a message to show the specific cause of the command failure (that is, session disabled, VTAM shutdown, application logged off) and a negative return code from the last issued EPI host command.
If possible, the EPI also writes a message to the system log to identify a failing EPI command.
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