Use the BLSCDROP CLIST to issue DROPDUMP against data sets that
are described through DSNAME in the currently allocated dump directory,
yet are not catalogued. This cleans out entries that are no longer
associated with a cataloged dump data set.
Note: If the
data set was renamed, use the IPCS ALTER subcommand to change the
name of the dump or trace data set in the IPCS dump directory, before
using BLSCDROP (or issuing the IPCS DROPDUMP CLIST).