Reason:
An invalid DSCB1 was found in the volume table of contents (VTOC) on the volume where the control file resides. The format ID of a valid DSCB1 should be X'F1'. The error occurred while processing an entry in the DDNAMES MIM file. CA MIM for z/VM ignores the indicated DDNAMES MIM entry and continues initialization.
Action:
Verify the integrity of the VTOC on the volume where the control file resides.
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