Reassessment notices issued beyond three years require prior...

Reassessment notices issued beyond three years require prior approval from the higher specified authority prescribed by section 151(ii); approval by a Principal Commissioner is insufficient, invalidating the notice and consequential assessment. Where an assessee asks that an original return be treated as the return filed in response to reassessment proceedings, a notice under section 143(2) becomes mandatory, and its omission invalidates the assessment. The inadequate-consideration provision for immovable property does not apply prospectively where the agreement, full payment and possession established completion of the purchase before the amendment took effect, despite later registration.