INDIVIDUAL-UNIT TRACEABILITY
Serial Number
A serial number identifies an individual unit within a defined product or identification scheme. It distinguishes instances, while an item identifier commonly identifies the product type and a lot identifies a group.
SERIAL NUMBER IN PRACTICE
- Define the scopeIdentify the unit and owning scheme.
- Capture the identityPreserve characters and relevant context.
- Track the lifecycleLink receipts, moves, returns and service events.
Use the agreed units, actual records and approved procedures for your operation.
A WORKED EXAMPLE
Product type and individual unit need different references.
Two units share the same SKU but have different serial identities. A return process verifies both the product and relevant serial context rather than selecting any unit with a matching model description.
WHAT THIS MEANS FOR YOUR QUOTE
Agree the requirement before comparing quotes
Use the actual shipment, stock and service requirements. Record the billing unit, included work and responsibility for exceptions.
A LITTLE MORE CONTEXT
Questions about Serial Number
Is a serial number the same as a SKU?
No.
Is a serial string always globally unique alone?
No.
Does a serial code alone prove authenticity?
No.
Source & example notes
GS1: global traceability standard.
Sources provide background on the linked topic. Product documentation describes a particular implementation; confirm the rules, contract and procedures that apply to your operation.
Quantities, costs and scenarios are illustrative, not operating targets, approved handling instructions or guarantees. Source guidance reviewed 23 October 2026.
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