Database Error

[WhatChaMissin]

I'm receiving the following error whenever I try to buy a lottery ticket


Database error in vBulletin 3.5.4:

Invalid SQL:

INSERT INTO vb351_vbplaza_itemhistory (historyid, itemid, itemname, userid, username, dateline, finalcost, extrainfo)
VALUES
(
0,
'48',
'Buy Lottery Ticket',
'533',
'Rafael',
'1164154997',
'87.84252',
'Lottery Name: Weekly Lottery - Number of Tickets: 1'
);

MySQL Error : Duplicate entry '1' for key 1
Error Number : 1062
Date : Tuesday, November 21st 2006 @ 05:23:18 PM
Script : http://www.whatchamissin.com/forums/vbplaza.php
Referrer : http://www.whatchamissin.com/forums/vbplaza.php
IP Address : xxxxx
Username : Rafael
Classname : vb_database

how can I correct this?

Thanks!

[WhatChaMissin]

anyone???