Foreign portfolio investor compliance: mandatory disclosure, AML client details, and notification of ownership or structural changes required. Regulation 23 requires foreign portfolio investors to comply with the Regulations and Board conditions; promptly notify the Board and designated depository participant of false, misleading or materially changed information including changes in structure, ownership or control; submit documents or information to Indian authorities when required; disclose penalties, litigations or regulatory findings; obtain a Permanent Account Number; provide fit and proper undertakings, declarations and beneficiary ownership/client details to ensure AML and FATF compliance; and notify the designated depository participant forthwith of any direct or indirect change in structure or common ownership or control.