During IXMAINT, some uncataloged data sets sharing a GDG base name
may be treated as cataloged since the GDG base is cataloged when a
pattern is used in DSN=.
DSNINDEX records will be processed incorrectly for expiration.
Release : Disk Backup and Restore 12.5
Either APPLY the APAR LU03068 to correct this problem or specify the data set name without a using a pattern as a circumvention.