Rectification under section 154 cannot delete debatable appellate directions where no patent mistake appears on the record.

Rectification under section 154 is limited to obvious and patent mistakes and cannot be used to reopen a debatable issue or reargue the scope of appellate powers. Directions issued by the first appellate authority for the Assessing Officer to proceed under sections 147 or 143(3) did not disclose a mistake apparent from the record because the challenge depended on a substantive jurisdictional debate requiring detailed reasoning. The claimed excess of jurisdiction was therefore not a patent error amenable to rectification, and the application to delete those directions was not maintainable.

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Issues: Whether the assessee could invoke rectification to delete the appellate directions asking the Assessing Officer to proceed under sections 147 or 143(3), and whether such directions constituted a mistake apparent from the record.

Analysis: Rectification under section 154 is confined to obvious and patent mistakes and cannot be used to reargue a point requiring detailed reasoning or where two views are possible. The appellate directions were issued while dealing with the assessment issue and the objection to them depended on a substantive debate about the scope of the first appellate authority's powers. Such a question was not an obvious error amenable to rectification. The claim that the directions were beyond jurisdiction did not disclose a patent mistake on the face of the record.

Conclusion: The rectification application was not maintainable on this ground and the appellate directions could not be deleted under section 154.

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