Retention of seized property requires forwarding the retention order and materials with formal acknowledgement by the adjudicating authority. Form I requires the authorized officer to forward a copy of the order of retention of seized property and the material to the adjudicating authority, who must complete an acknowledgement slip recording serial number, order reference and date, designation of the forwarding officer, date and time of receipt, signature, name and office seal, and the adjudicating authority's office details to create an administrative record of transmission and acceptance.