Hi Hemanth,
I have shared 2 links below. The second link provides you with details on how to integrate.
https://www.symantec.com/content/dam/symantec/docs/data-sheets/web-security-service-data-loss-prevention-en.pdf
https://portal.threatpulse.com/docs/sol/Solutions/ManageDLP/c2premdlp_sol.htm
I hope this helps, and if it answers your questions please mark as resolved.
Thanks
Alan