CBDT extends the last date for updating UDINs till January 31, 2022
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 - https://www.icai.org/post/last-date-for-updation-of-udins-at-e-filing-portal