Aadhaar authentication requirement: authorised signatories, managing partners and HUF karta must verify Aadhaar for GST registration; alternate ID permitted. Requires specified non-individual persons to undergo Aadhaar authentication for GST registration, identifying authorised signatories, managing and authorised partners, and the Karta of an HUF as covered classes, and provides that if Aadhaar is not assigned such persons shall be offered alternate and viable means of identification as specified in rule 9.