DFSIX074 `aaaaaaaa` - `vvvvvvvv` - BLK GROUP `blk grp` IS UNKNOWN

Explanation
 This message should not occur. If this message
does occur, it is the result of a programming error.
 In the
message text:  
aaaaaaaa

The module that was running when this message was issued.

vvvvvvvv

variable containing unknown BLK group.

blk grp

The block group.

System action
 Processing of the variable vvvvvvvv is
terminated.

Programmer response
 Contact IBM® Software
                Support for
assistance and to report the problem.

Module
 DFSIXX11

DFSIX074 aaaaaaaa - vvvvvvvv - BLK GROUP blk grp IS UNKNOWN