Weblogic - [Management:141245] Schema Validation Error in config/config.xml

Hi,

I am getting following error when i activate any changes on weblogic server ;

I already started admin server with option -Dweblogic.configuration.schemaValidationEnabled=false ;

<BEA-240003> <Console encountered the following error weblogic.management.provider.UpdateException: [Management:141191]The prepare phase of the configuration update failed with an exception:

        at weblogic.management.provider.internal.RuntimeAccessDeploymentReceiverService.updateDeploymentContext(RuntimeAccessDeploymentReceiverService.java:670)

        at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.doUpdateDeploymentContextCallback(DeploymentReceiverCallbackDeliverer.java:147)

        at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.updateDeploymentContext(DeploymentReceiverCallbackDeliverer.java:28)

        at weblogic.deploy.service.internal.statemachines.targetserver.ReceivedPrepare.callDeploymentReceivers(ReceivedPrepare.java:203)

        at weblogic.deploy.service.internal.statemachines.targetserver.ReceivedPrepare.handlePrepare(ReceivedPrepare.java:112)

        at weblogic.deploy.service.internal.statemachines.targetserver.ReceivedPrepare.receivedPrepare(ReceivedPrepare.java:52)