/CHECK_EXPANSIONS
       /NOCHECK_EXPANSIONS (default)

    This qualifier controls checking of alias address expansion.
    Normally PMDF considers the expansion of an alias to have been
    successful if any of the addresses the alias expands to are
    legal. The /CHECK_EXPANSIONS qualifier causes a much stricter
    policy to be applied; TEST/REWRITE checks each expanded address
    in detail and reports a list of any addresses, expanded or
    otherwise, that fail to rewrite properly. For addresses that
    match the L channel, PMDF also performs validity checks.