Rectification powers cannot reopen a debatable issue already decided in appeal; merged orders are outside section 154 scope.

A Commissioner (Appeals) cannot use rectification powers under section 154 to reopen an issue already carried in appeal and decided by the appellate authority. Once the appellate order is passed, the original order merges and ceases to survive independently for rectification on the same matter. Section 154(1-A) permits amendment only on matters not already considered and decided in appeal or revision, and it cannot be used for a fresh, debatable re-examination of an issue. The rectification order was therefore without jurisdiction and liable to be quashed, and revenue authorities were bound by the issue as settled in the appellate chain.

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Issues: Whether the Commissioner (Appeals) could invoke rectification powers under section 154 after his earlier order had merged in the appellate order, and whether a debatable issue already decided on appeal could be reopened by rectification.

Analysis: The earlier order of the Commissioner (Appeals) had been carried in appeal and was specifically considered by the Tribunal. Once the appellate order came into existence, the original order ceased to survive independently for rectification on the same matter. Section 154(1-A) permits amendment only on matters other than those already considered and decided in appeal or revision. The Court also held that the proposed correction would necessarily involve a fresh and debatable examination of the same question, which is outside the scope of rectification. In addition, the issue had already been settled against the revenue in the appellate chain, and subordinate revenue authorities were bound to follow that conclusion.

Conclusion: The rectification order was without jurisdiction and liable to be quashed; the writ petition succeeded.

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