an item list contained an unknown item code

    Explanation: This message indicates the dfg_list or sch_list
    parameter to DFG$DEFRAGMENT contained an item descriptor with
    an unknown item code. It may also indicate a faulty item_list_2
    returned from DFG$DEFRAGMENT as part of the SHOW subcommand.

    User Action: If the call to DFG$DEFRAGMENT was from HP supplied
    software, submit an SPR. Otherwise, correct the calling program.