Portal updates: Sr. No Particulars Form/ Functionality Description 1 Registration Revocation of registration in Form REG-21 Normal taxpayers will now not be able to file Revocation application in Form REG-21 if they have not got their Aadhaar authentication done/e-KYC verified with Aadhaar enrolment ID. Aadhar enrolment ID Existing taxpayers as well as persons/entities applying for new registration, are now mandatorily required to provide Aadhaar enrolment ID no. for e-KYC verification. .......