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0566

(ddd) ON (vvv), KEY = (kkk) REPORT = (rrr): INVALID DIRECTORY BLOCK

Reason:

The VTOC entry for data set (ddd) on volume (vvv) indicated the data set was a PDS, but an incorrect directory block was found in it during processing.

Action:

Use IBM or other utilities to verify the data set is a PDS of correct format. Recreate or reload an older valid version of the PDS to correct the problem.