S. 143(2): Assessment – Notice – Notice of demand to be valid in certain circumstances -Limited scrutiny – Authentication of notices and other documents – A notice issued under section 143(2) after 23-06-2017 is not rendered invalid merely because it is not in the format prescribed by the CBDT Instruction dated 23-06-2017 or does not specify whether the case is selected for Limited Scrutiny, Complete Scrutiny or Manual Scrutiny- Such omission is a procedural defect cured by section 292BB provided the notice is issued within limitation, conveys that the return has been selected for scrutiny and no prejudice is caused to the assessee. [S. 119, 142(1), 143(3), 282A, 292B, 292BB]