Aadhaar authentication requirement extended to specified non-individuals for GST registration, with alternate ID options provided. The notification requires Aadhaar authentication of possession for authorised signatories, managing and authorised partners of partnership firms, and the karta of Hindu undivided families as specified in the Bihar GST Rules to be eligible for GST registration, and provides that persons without Aadhaar shall be offered alternate viable means of identification under the prescribed rule.