S. 148A: Reassessment-Conducting inquiry, providing opportunity before issue of notice-Notice issued after more than six years-non-compliance with mandatory requirements-Period had not got extended by Taxation and Other Laws (Relaxation and Amendment of Certain Provisions) Act, 2020-Notices dated 1-4-2021 and 5-4-2021 were held to be bad in law. [S. 148, 149, Art. 226]