Hello Kamilia. This forum is for the product Information Centric Analytics (ICA) so the members here might not be able to assist with ICT-related questions. I recommend submitting this question in the Data Loss Prevention community forum, which is located here: https://community.broadcom.com/symantecenterprise/communities/communityhomeblogs?CommunityKey=65cf8c43-bb97-4e96-ae0b-0db8ba1b4d07
As for your question, I searched the Broadcom KB and found the following article that might be of some help to you: https://knowledge.broadcom.com/external/article?articleId=172838