Substantial compliance under exemption notifications saves refund claims despite delayed production of supporting certificates.

Non-production of a Duty Exemption Certificate at the time of clearance was treated as a procedural lapse, not a substantive bar to exemption. The imported capital goods satisfied the exemption notification's core conditions, and the certificate was later produced from the competent authority. That later production amounted to substantial compliance, so the delayed filing did not defeat the exemption claim or the refund entitlement.

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Issues: Whether non-production of the Duty Exemption Certificate at the time of clearance of imported goods under the exemption notification was fatal to the importer's claim for refund and exemption.

Analysis: The imported capital goods were covered by the exemption notification, and the certificate produced later was found to have been issued by the competent authority. The requirement to produce the certificate at the time of clearance was treated as procedural only. Since the substantive conditions for exemption were satisfied, later production of the certificate amounted to substantial compliance and did not defeat the exemption claim.

Conclusion: The belated production of the Duty Exemption Certificate did not invalidate the exemption claim, and the refund was rightly allowed.

Ratio Decidendi: Where the substantive conditions of an exemption notification are fulfilled, non-production of a supporting certificate at the time of clearance is a curable procedural lapse and subsequent production constitutes substantial compliance.

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