Unknown system error?

Can anyone make sense of this piece of client log?  The odd part is on line
 15, "unknown system error", with no other clues given.   The server logs
don't give much more information,
and merely indicate that the job failed.

What is this?


07/19/00   02:08:21 --- SCHEDULEREC STATUS BEGIN
07/19/00   02:08:21 Total number of objects inspected:   71,339
07/19/00   02:08:21 Total number of objects backed up:        0
07/19/00   02:08:21 Total number of objects updated:          0
07/19/00   02:08:21 Total number of objects rebound:          0
07/19/00   02:08:21 Total number of objects deleted:          0
07/19/00   02:08:21 Total number of objects failed:           0
07/19/00   02:08:21 Total number of bytes transferred:        0
07/19/00   02:08:21 Data transfer time:                    0.00 sec
07/19/00   02:08:21 Network data transfer rate:            0.00 KB/sec
07/19/00   02:08:21 Aggregate data transfer rate:          0.00 KB/sec
07/19/00   02:08:21 Objects compressed by:                    0%
07/19/00   02:08:21 Elapsed processing time:           00:08:12
07/19/00   02:08:21 --- SCHEDULEREC STATUS END
07/19/00   02:08:21 Unknown system error
07/19/00   02:08:21 --- SCHEDULEREC OBJECT END U1_APPS 07/19/00   02:00:00
07/19/00   02:08:21 ANS1512E Scheduled event 'U1_APPS' failed.  Return code
= 4.
07/19/00   02:08:21 Sending results for scheduled event 'U1_APPS'.
07/19/00   02:08:21 Results sent to server for scheduled event 'U1_APPS'.
07/19/00   02:08:21 ANS1483I Schedule log pruning started.
07/19/00   02:09:24 Schedule Log Prune: 146764 lines processed.  0 lines
pruned.
07/19/00   02:09:25 ANS1484I Schedule log pruning finished successfully.
07/19/00   02:09:25 Querying server for next scheduled event.
07/19/00   02:09:25 Node Name: U1_APPS
07/19/00   02:09:25 Session established with server ADSM: AIX-RS/6000
07/19/00   02:09:25   Server Version 3, Release 1, Level 2.20
07/19/00   02:09:25   Server date/time: 07/19/00   02:09:25  Last access:
07/19/00   02:00:18
07/19/00   02:09:25 --- SCHEDULEREC QUERY BEGIN
07/19/00   02:09:25 --- SCHEDULEREC QUERY END