Aadhaar authentication requirement: authorised signatories, managing partners and Karta must authenticate Aadhaar for SGST registration. Notification requires authorised signatories, managing and authorised partners of partnership firms, and the Karta of a Hindu undivided family to undergo Aadhaar authentication of possession of Aadhaar number to be eligible for SGST registration; where Aadhaar is not assigned, alternate and viable means of identification must be provided under the applicable procedural rules, with the requirement effective from the 1st day of April, 2020.