https://www.scconline.com/blog/post/2019/03/29/aadhaar-pan-linking-is-mandatory-and-has-to-be-completed-till-31-3-2019-by-pan-holders-requiring-filing-of-income-tax-return/
Aadhaar-PAN linking is mandatory and has to be completed till 31-3-2019 by PAN holders requiring filing of Income Tax Return