Section 30G(3) in The Narcotic Drugs And Psychotropic Substances Rules, 1985
(3)In case of non-receipt of duplicate copy by the consignor, duly endorsed by the consignee acknowledging the receipt of the consignment referred to in sub-rule (1), the consignor shall report loss or disappearance of the consignment to the Narcotics Commissioner within ten days from the date of dispatch of the consignment.