SS$_NORMAL Normal successful completion. MAIL$_INVITMCOD The specified item code is invalid. MAIL$_INVITMLEN The specified item length is invalid. MAIL$_MISREQITEM The required item is missing. MAIL$_NOSUCHUSR The specified user name is not valid. MAIL$_NOSYSPRV The operation requires the SYSPRV privilege. SS$_ACCVIO Access violation.