GIM63802IARCHIVE NAMES UP TO 756 CHARACTERS IN LENGTH ARE SUPPORTED ONLY BY SMP/E VERSION 3 RELEASE 3 OR HIGHER.

ARCHIVE NAMES UP TO 756 CHARACTERS IN LENGTH ARE SUPPORTED
ONLY BY SMP/E VERSION 3 RELEASE 3 OR HIGHER.
Explanation

 GIMUNZIP attempted to process an archive
file whose name exceeds the allowable length of 557 characters.  SMP/E
Version 3 Release 3 or higher supports archive names up to 756 characters
in length.

System action
 Processing stops.

Programmer response
 If the archive name is not more than 756
characters, rerun the job using the indicated level of SMP/E.