It means the date up to which the commodity is expected to be valid for delivery on exchange platform at pay-in of commodities. After the expiry of validity date, the commodity should be either withdrawn from the warehouse or further revalidated if final expiry date is not reached. After reaching the final expiry date, no further revalidation is permitted on the same commodity and therefore, the depositor/ holder of such commodities have to withdraw the commodity from the warehouse latest by the final expiry date. The validity date will be assigned at the time of deposit of commodity at the warehouse and it is reflected on the Quality Certificate.