SS$_NORMAL         Normal successful completion.
    MAIL$_CONITMCOD    The specified item codes perform conflicting
                       operations.
    MAIL$_ILLCHAR      Unacceptable character in personal name.
                       Utility returns three formatted ASCII
                       output (FAO) arguments including the illegal
                       character, the length of the string, and the
                       string address.
    MAIL$_ILLPERNAM    Personal name formatted improperly. Returns
                       an FAO argument containing the improperly
                       formatted personal name.
    MAIL$_ILLSUBDIR    Illegal subdirectory specification. Returns
                       an FAO argument containing the subdirectory
                       string.
    MAIL$_INVITMCOD    The specified item code is invalid.
    MAIL$_INVITMLEN    The specified item length is invalid.
    MAIL$_MISREQITEM   The required item is missing.
    MAIL$_NAMTOOBIG    Specified name exceeds 255-character limit.
    MAIL$_NOTSUBDIR    No such subdirectory. Returns an FAO argument
                       containing the subdirectory string.
    MAIL$_NOSUCHUSR    No such user. Returns the name of the unfound
                       user.
    MAIL$_NOSYSNAM     Caller needs SYSNAM privileges.
    MAIL$_NOSYSPRV     Caller needs system privileges.
    SS$_ACCVIO         Access violation.