Aadhaar authentication requirement for non-individual representatives; compliance determines GST registration eligibility under prescribed rules. Notification prescribes that specified non-individual persons-authorised signatories, managing and authorised partners of partnership firms, and the Karta of a Hindu undivided family-must undergo Aadhaar authentication of their Aadhaar number to be eligible for GST registration, and where Aadhaar is not assigned they shall be offered alternate and viable means of identification as specified in the applicable CGST rules.