Reassessment notice under section 148 requires prior procedure, specified information, and approval before escaped-income action. Initiation of reassessment under section 148 requires notice calling for a return of income within the prescribed period, after compliance with section 148A and accompanying order under section 148A(3). No notice may issue unless the Assessing Officer has information suggesting escaped assessment, including specified risk-management, audit, treaty, scheme, Tribunal or Court, and survey-based information. The return must be furnished in the prescribed form and manner, and prior approval of the specified authority is required in notified-scheme cases.