Serial number tracking in Zoho Inventory assigns a unique identifier to each physical unit of an item. Unlike batch tracking which groups units, serial tracking is one-to-one: each unit gets its own serial number. This enables full traceability from vendor to end customer.
When you receive items on a purchase order, you assign serial numbers to each unit. When fulfilling a sales order, the system asks which specific serial numbers are being shipped. This creates a chain of custody from purchase receipt to customer delivery.
Serial tracking is essential for high-value items like electronics, medical devices, and machinery where warranty management, post-sale service, and regulatory compliance require individual unit traceability. It is not practical for low-value, high-volume items.
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