Why must item identifiers (SKUs/barcodes) be included on shipping labels and manifests?

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Item identifiers on shipping labels and manifests provide a reliable signal for matching every unit to the right order. Each SKU or barcode is tied to a specific product and its attributes, and it links to the item’s inventory record. When these identifiers are included and scanned during packing, the system can verify that the items being packed are exactly what the customer ordered and in the correct quantities. This real-time scanning updates the order status and the inventory, helping prevent mis-picks, mix-ups, or shipping the wrong item. The manifest uses the same identifiers to ensure the entire shipment contains the correct items, which also aids traceability and returns processing.

Decorating the container has no impact on accuracy. Comparing with supplier invoices only checks invoices against records, not the actual customer order and packed contents. Allowing customers to scan for discounts is a customer-facing feature and not part of ensuring correct fulfillment.