IRR63042I

Explanation
The index block that was read in by the READ command
is not a level-1 index block.  The SEGMENT keyword of the DISPLAY
command and its subcommands is only valid for level-1 index blocks.

System action
The subcommand of DISPLAY (CHANGE, INSERT, or
DELETE) fails, and utility processing continues.

System programmer response
End processing of the DISPLAY command
and perform a FORMAT subcommand under READ.  Determine the level of
the index block being listed by the output of the FORMAT subcommand.
 Reassess which level-1 index block RBA you intended to work with,
END the READ command, and issue the READ command with the RBA of the
level-1 index block.