product identification code

product identification code (PID) refers to a unique code assigned to products for inventory management, tracking, and differentiation purposes. It can take various forms, such as a barcode, SKU, or UPC. In e-commerce and retail, the PID helps to ensure accurate stock levels, streamline the ordering process, and prevent shipping errors. It is essential for businesses to maintain a consistent and accurate PID system to facilitate smooth logistics, order fulfillment, and customer service operations.