Block period definition set for searches and requisitions, with an extended transitional period for earlier actions.

The amendment substitutes the clause defining block period, specifying it to comprise the previous years relevant to six assessment years preceding the previous year in which a search or requisition is conducted and to include the period up to the date of commencement of that search or requisition; a proviso treats searches or requisitions initiated before the operative date as if the block period comprised ten assessment years.

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