Uma configuração

[xadresz]

Galera eu sempre tive esta dúvida mas nunca quis saber para que serve uma configuração que existe.
Mas logo depois que apareceu este erro no gs:

could not insert char quest:
com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Dupl
icate entry '268478092-9998_AIOSHOP-<state>-0' for key 'PRIMARY'
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

        at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)

        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Sou
rce)
        at java.lang.reflect.Constructor.newInstance(Unknown Source)
        at com.mysql.jdbc.Util.handleNewInstance(Util.java:407)
        at com.mysql.jdbc.Util.getInstance(Util.java:382)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1039)
        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3593)
        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3525)
        at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1986)
        at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2140)
        at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2626)
        at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.ja
va:2111)
        at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java
:2407)
        at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java
:2325)
        at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java
:2310)
        at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeUpdate(NewP
roxyPreparedStatement.java:105)
        at com.l2jfrozen.gameserver.model.quest.Quest.createQuestVarInDb(Quest.j
ava:1270)
        at com.l2jfrozen.gameserver.model.quest.Quest.createQuestInDb(Quest.java
:1428)
        at com.l2jfrozen.gameserver.model.quest.Quest.newQuestState(Quest.java:2
47)
        at com.l2jfrozen.gameserver.model.actor.instance.L2NpcInstance.showQuest
Window(L2NpcInstance.java:1740)
        at com.l2jfrozen.gameserver.model.actor.instance.L2NpcInstance.onBypassF
eedback(L2NpcInstance.java:1134)
        at com.l2jfrozen.gameserver.model.actor.instance.L2FolkInstance.onBypass
Feedback(L2FolkInstance.java:338)
        at com.l2jfrozen.gameserver.model.actor.instance.L2MerchantInstance.onBy
passFeedback(L2MerchantInstance.java:212)
        at com.l2jfrozen.gameserver.network.clientpackets.RequestBypassToServer.
runImpl(RequestBypassToServer.java:248)
        at com.l2jfrozen.gameserver.network.clientpackets.L2GameClientPacket.run
(L2GameClientPacket.java:90)
        at com.l2jfrozen.gameserver.network.L2GameClient.run(L2GameClient.java:1
082)
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source
)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)

Eu fiquei pensando será que tem haver com essa configuração ?

# Remove broken quests player
AutoDeleteInvalidQuestData = False

Alguém poderia me dizer?
Vlw!