Designated depository participant obligations: ensure KYC, AML compliance and reporting, segregate activities and submit audits promptly. Designated depository participants must comply with applicable regulations and promptly report false or materially changed information to the Board, furnish records to regulators, ensure only registered foreign portfolio investors invest, perform KYC for joint holders, and follow AML/CFT circulars. When handling foreign portfolio investor registrations they must verify investor group status, open dematerialized accounts only after AML and FATF compliance, prevent duplicate depository accounts except as allowed, collect and remit prescribed fees, reassess eligibility on structural changes, segregate activities to avoid conflicts, submit required reports, conduct independent annual reviews, provide annual internal control audit reports, and quarterly Action Taken Reports.