The Central Board of Direct Taxes (“CBDT”) has extended the last date for updating Unique Document Identification Numbers (“UDINs”) for all the Income Tax forms at the e-filing portal to January 31, 2022.
For any clarification, please write to us at udin@icai.in.
Source from: https://www.icai.org/post/last-date-for-updation-of-udins-at-e-filing-portal