MAIL$_INVITMCOD The specified item code is invalid. MAIL$_INVITMLEN The specified item length is invalid. MAIL$_MISREQITEM The required item is missing. MAIL$_NOFILEOPEN The mail file is not open. MAIL$_NOTISAM The message file is not an indexed file. MAIL$_OPENIN Mail cannot open the file as input. SS$_ACCVIO Access violation. Any condition value returned by $CLOSE, $OPEN, $PARSE, and $SEARCH.