Vietnam is implementing a system to allocate codes to growing areas and packing facilities for agricultural products exported to countries with which it has multilateral or bilateral trade agreements. The codes are used to ensure traceability and to monitor pest control practices and used pesticides and fertilizers. The Plant Protection Department is primarily responsible for managing and monitoring the codes, with support from localities and exporting enterprises. However, lax management in some localities and incorrect code usage by enterprises have been identified as issues. The codes are required to access export markets, with the US having the most codes granted.