There are enormous opportunities still available for SAP-HR. Tomorrow's HR system will be based on SAP. Most multinational organizations have already adopted the SAP system.
PG Diploma in Personnel Management
With regard to the PG Diploma in Personnel Management, NIPM Kolkata (National Institute of Personnel Management) is a professional body of personnel management in India. The course details are available on their site
Welcome to NATIONAL INSTITUTE OF PERSONNEL MANAGEMENT!. After awarding a degree equivalent to an MBA, they will also provide professional membership.
SAP Opportunities
Regarding SAP, I believe Bangalore is a suitable place. I am not sure whether MSW and LLB can fulfill the future requirements of HR. If you are interested in legal aspects, you can pursue LLB. I can frankly say that the openings in SAP HR are more and pay packages are high.
Therefore, you have to do a lot of research in the area of SAP.
Best regards,
Asok Kumar. R