Assessee-company was engaged in business of manufacturing, trading and marketing of pesticides. Assessment was completed under section 143(3) making certain additions. Subsequently, AO reopened assessment and made additions on account of provision for diminution in value of assets and provision for doubtful debts. Tribunal set aside reassessment proceedings and High Court upheld order of Tribunal. AO again initiated reassessment proceedings on ground that set off of unabsorbed depreciation against book profit was not in order. On writ the Court held that when High Court had already set aside reassessment proceedings for relevant assessment year, there was no warrant for issue of further notice under S. 148 of the Act. (AY. 2005 -06)