KS3G184E [module_name] UNABLE TO LOCATE [DSCB|UCB] FOR [datasetname] ON [volser]
Explanation
Either the FORMAT 1 DSCB for the specified data set or the UCB for volume upon which it resides could not be obtained.
System action
Space collection for the current data set is skipped, and processing continues with the next data set.
User response
Ensure that the data set actually exists on the volume, as indicated by its catalog entry. If so, check the validity of its VTOC entry using another utility (e.g. ISPF 3.4; IEHLIST). If it appears to be correct, contact IBM Software Support.