Finality of settled exemption issue bars reopening of substantial expansion dispute under refund notification.

Entitlement to refund under Notification No. 33/99-CE turned on whether the same manufacturing unit had achieved substantial expansion, and that question had already been decided in earlier Tribunal proceedings in favour of the assessee. Because the issue had attained finality, it could not be reopened in later proceedings, and the appellate authority could not re-determine a settled question beyond the scope of the dispute before it. The principle of finality therefore barred further challenge to substantial expansion, and the refund benefit remained available to the assessee under the notification.

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Issues: Whether the assessee was entitled to refund under Notification No. 33/99-CE on the basis of substantial expansion of the unit, and whether the issue of substantial expansion could be reopened despite earlier Tribunal decisions attaining finality.

Analysis: The issue of substantial expansion for the same manufacturing unit had already been adjudicated in earlier proceedings, where the Tribunal had held that the unit had satisfied the condition of substantial expansion under the notification. The same issue was again raised in the impugned order, although it had already attained finality. The appellate authority also travelled beyond the scope of the dispute before it by re-determining substantial expansion, even though the earlier Tribunal rulings had already settled that question in favour of the assessee. In these circumstances, the principle of finality applied and the reopened issue could not be agitated again.

Conclusion: The reopening of the issue of substantial expansion was not permissible, and the assessee remained entitled to the refund benefit under the notification.

Ratio Decidendi: An issue conclusively decided for the same unit under the same exemption notification cannot be reopened in subsequent proceedings once it has attained finality; appellate interference on that settled question is barred by the principle of finality.

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