S. 143(3) : Assessment-Assessment order without DIN (Document identification number) has not valid in law-Statutory defects in the assessment order cannot be cured by applying the provision of section 292B of the Act-Circular No 19 of 2019 dated 14-8-209 (2019) 416 ITR 140 (St) of CBDT is binding on the Revenue-Order of Tribunal quashing the assessment order was affirmed-On SLP, interim stay of order dated 20-3-2-2023 as well as order of the ITAT dated 19-9-2022, until further orders. [S. 144C, 147, 292B, Art. 136]