Hi Atif ,
As u might aware about ISO 270001 which is for Information security mnagement system (ISMS) compliance when any organization have effective IT security infrastructure to protect data/information.
DLP is part of this ISO 270001 compliance which plays most effective role in this and during Audit it must be requried specially by Financial organization.
DLP has various solution packs like for financial institute (contains CCN etc.), Solution pack for IT comapny (source code protection)...protection for health information etc........overall DLP is ISO 270001 compalince.
please check below url for just understanding purpose, not for your asked query.
https://www-secure.symantec.com/connect/forums/pci-dss-compliant
https://www-secure.symantec.com/connect/forums/symantec-dlp-solution-pack-import-error#comment-8045331