The functionality for updating UDIN against the Audit reports submitted by CA users has been enabled at e-filing portal www.incometax.gov.in. Please Note: 1. Update UDIN functionality is applicable only for Forms submitted on or after April 2021. 2. UDIN for only those Forms can be updated which are accepted by the Assessee. 3. Following information is correctly filled against the Form as per UDIN generated from ICAI portal