The function sends a SCSI Initialize Element Status command to
    the specified robot. This command is not supported by the TA and
    TF loaders. On robots where this command is supported, it forces
    a physical reinventory of the library or loader. On some library
    systems this may take a long time.

    Most library subsystems will perform an inventory when they are
    powered on or have detected that the configuration may have
    changed (doors opened, panels removed, etc). For this reason,
    this routine is rarely needed.