请教高手.转换出现这个语句是什么问题呢.?

MySQL Error
Message: query_error
SQL: INSERT INTO `discuzx`.pre_forum_polloption SET `polloptionid`='943',`tid`='45688',`votes`='1',`displayorder`='0',`polloption`='不想',`voterids`='6 '
Error: Duplicate entry '943' for key 'PRIMARY'
Errno.: 1062
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PHP Backtrace

File	Line	Class	Type	Function
include\db.class.php	102	db_mysql	->	halt
source\d7.2_x1.5\table\polloptions.php	31	db_mysql	->	query
include\do_convert.inc.php	54			require
index.php	36			require