The CHANGE FILE_ELEMENT command modifies a file element by
    performing a change in place. CDO changes the values you specify,
    and other values remain the same.

    Because a file element is a controlled element, CDO freezes
    previous versions and allows you to modify only the highest
    visible version.

    Before you can issue the CHANGE FILE_ELEMENT command, you must
    reserve the file element with the RESERVE FILE_ELEMENT command.

    If you add, change, or delete a property from the file element,
    the property you specify must be a defined or inherited property
    for the file element's type. See the Oracle CDD/Repository
    Information Model for a list of these properties.

    Errors occur if you attempt to delete the MCS_STOREDIN property
    from a file element whose STORETYPE is EXTERNAL. CDO requires
    this property for external files.