Hi Deta,
You can dismissed the incidents which are false postives and escalate which looks genuine or true postive. It all depends on your bussiness stakeholder and information security policy and nature of data, I would suggest to follow below thereat for more infomation
https://www-secure.symantec.com/connect/forums/symantec-dlp-incident-workflow-incident-management
https://www-secure.symantec.com/connect/forums/dlp-incident-handling-methods
https://www-secure.symantec.com/connect/forums/incident-management