China Barcode Network: As the identity of a product, the uniqueness of the barcode is very important. If there are duplicate codes, it will cause confusion in the circulation of goods. This situation is generally caused by chaotic corporate management or frequent changes in barcode management personnel. In order to avoid this problem, on the one hand, it is necessary to establish systems and strengthen management. When compiling commodity item codes, enterprises should strictly follow the principles of commodity coding, paying special attention to basic characteristics (commodity name, trademark, type, specification, quantity, packaging type, etc. ) Different commodities should be compiled with different commodity item codes; on the other hand, qualified system members should establish commodity barcode encoding files or computer management systems and manage them by dedicated personnel, so that the company's commodity coding situation can be accurately grasped, thereby eliminating duplication of codes Phenomenon. At the same time, it is necessary to improve the professional quality of managers, strengthen their sense of responsibility, and ensure that they inquire before coding, be careful when coding, and review after coding. As long as everyone pays attention to it and works seriously, we can avoid the occurrence of duplicate codes.