Problem:

When trying to access a GDG migrated to tape, the following error message appears in the MFA log...

MFA1035I-Catalog error RC=004 VOL=F37173 DSN=CC.MASC.BCLADE.G0004V00

The GDG is not accessible, so what has happened...?

Resolution:

Here is an explanation of the diagnostic from the MFA Administrator's Guide:

MFA1035I CATALOG ERROR RC=nnn VOL=volid DSN=dsname

An error occurred attempting to OBTAIN a catlog record for the specified dsname on the specified volume ID. The dsname may no longer be catalogued on that volume, and MFA is unable to determine the file attributes. It is possible that the volume is simply not mounted, or is no longer in active service. This file will be ignored and processing will continue. The return codes are described in the IBM publication: DFSMSdfp Advanced Services (SC26-7400)

RC       Description

04       volume not mounted

08       The format-1 DSCB was not found in the VTOC of the specified volume

12       A permanent I/O error was encountered reading the VTOC of the specified volume

16        Invalid workarea pointer encountered

MFA does not recognize TAPES and the catalog services interface interprets this to be volume not mounted.

This would be the case even if the file being accessed was not a GDG, but was migrated to tape.