/MAPPING_FILE=filename

    TEST/FAX_ROUTING normally consults the default mapping file,
    PMDF_MAPPING_FILE, during processing. The /MAPPING_FILE qualifier
    specifies an alternate file to use in place of PMDF_MAPPING_FILE.

    This qualifier has no effect unless /NOIMAGE_FILE is specified
    or no compiled configuration exists; use of any compiled
    configuration will preclude reading any sort of mapping file.