Warehouse & logistics
Serialized Inventory
By the Supply Chain Manager team · Updated October 16, 2026
Serialized inventory tracks each individual unit by a unique serial number, rather than tracking only quantities, so every item's history is known.
It is common for equipment, electronics and anything with a warranty. Where lot tracking follows a batch, serialization follows one unit: which supplier, when received, which customer, and any returns.
Serial numbers are often captured at receiving, from a barcode on each unit, and again at shipping. In between, the system knows which serials are in which location. That makes it possible to answer questions like 'which customers received units from this batch?' or 'is this returned unit actually one we sold?'.
Serialized inventory example
Illustrative: a customer returns a controller under warranty. The serial number shows it shipped 14 months ago from a lot with a known defect, so the claim goes straight to the manufacturer.
Why serialized inventory matters for distributors
Serialization supports warranties, returns and theft prevention for high-value items. It adds a scan at every movement, so it is usually reserved for items that justify it.
Common serialized inventory mistakes
- Serializing low-value items where the scanning cost outweighs the benefit.
- Allowing units to move without scanning the serial number.
Examples on this page use made-up round numbers to show the calculation. They are not benchmarks or results from real businesses.