Original duty-paying documents required for Modvat credit; carbon copy and substantial compliance were insufficient to claim the benefit.

Rule 57G(4) made production of the original duty-paying document a mandatory condition for Modvat credit, and a carbon copy did not satisfy that statutory requirement. Trade notices, open-house discussions and the doctrine of substantial compliance could not override the express rule, and the defect was not treated as a mere technical irregularity. The assessee was therefore not entitled to Modvat credit on the basis of the carbon copy, and the denial of credit was upheld.

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Issues: Whether Modvat credit could be denied when the assessee produced only a carbon copy of the duty-paying challan instead of the original document required under Rule 57G(4) of the Central Excise Rules.

Analysis: The requirement under Rule 57G(4) to submit original documents evidencing payment of duty was treated as a legal and mandatory condition for availing Modvat credit. The reliance placed on trade notices, open-house discussions, and the doctrine of substantial compliance did not override the express statutory requirement. Since the document produced was not the original duty-paying document, the lapse was not a mere technical irregularity.

Conclusion: The assessee was not entitled to Modvat credit on the strength of the carbon copy, and the denial of credit was upheld.

Final Conclusion: The appeal failed because compliance with the original-document requirement was mandatory for availing Modvat credit.

Ratio Decidendi: Where the statutory rule expressly requires original duty-paying documents for Modvat credit, a carbon copy does not satisfy the legal condition and the benefit cannot be claimed on the basis of substantial compliance alone.

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