GLN Global Location Number
The universal identifier for legal entities, physical locations, and digital addresses - enabling precise supply chain visibility and seamless electronic commerce.
What is a GLN?
A GLN (Global Location Number) is a 13-digit unique identifier used to represent any physical, functional, or legal entity within a supply chain.
Unlike an address that can change, a GLN is a permanent, machine-readable number that stays with the location or party throughout its lifetime. It eliminates ambiguity when ordering, invoicing, shipping, or tracking inventory — making it the digital passport for locations in B2B and B2C ecosystems.
What can be identified with a GLN?
- Legal entities - companies, subsidiaries, government bodies.
- Physical locations - warehouses, stores, factories, hospitals, docks.
- Functional locations - specific receiving bay, desk, or checkout lane.
- Digital addresses - e‑commerce return portal, electronic invoicing mailbox.
- GLN is mandatory for EDI (Electronic Data Interchange) and GDSN data synchronization.
GLN Structure
GLN is always a fixed-length 13-digit number with a specific composition.
(3 digits, country/GS1)
(variable length)
+ Check Digit (last digit)
Key Benefits of Using GLN
Precision, automation, and reliability across your business network.
Automated Invoicing & Ordering
GLN uniquely identifies buyer and seller in EDI messages — eliminating address confusion and manual entry errors.
Precise Shipment Routing
Use GLN in advance ship notices (ASN) and GS1-128 labels to direct goods to the exact dock or department.
Data Synchronization (GDSN)
GLN is mandatory to register as a data source or recipient in the Global Data Synchronization Network.
Traceability & Recall
Know exactly which warehouse or store received a batch — crucial for food safety or pharmaceutical recalls.
Global Interoperability
A GLN works across borders and systems — no translation needed between trading partners in different countries.
API & Digital Integration
Modern supply chain platforms use GLN as the key identifier for location master data.
GLN in Real‑World Scenarios
How different industries leverage GLN for operational excellence.
Retail
Each store location has a unique GLN. Head office sends orders and invoices referencing the GLN, automatically routing to the correct POS system.
Logistics
3PL providers assign GLNs to every warehouse door, cross‑dock, and yard location — enabling real‑time visibility of inventory movement.
Healthcare
Hospitals use GLNs for pharmacy receiving, operating room supply storage, and patient billing departments — ensuring regulatory compliance.
GLN Best Practices
- Assign a separate GLN for each distinct physical or functional location (receiving, shipping, invoicing).
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Never reuse a GLN for a different location - retire it and issue a new one.
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Share your GLN registry with partners via GDSN or a simple GLN directory.
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Use GLN in EDI transactions (e.g., ORDERS, INVOIC, DESADV) to automate processing.
Frequently Asked Questions
GLN Resources & Tools
Deepen your understanding with official guides and videos.
How to obtain a GLN in Qatar
GS1 Qatar issues GLNs as part of your company prefix or as standalone location identifiers. The process is straightforward
- ✔ Apply for GS1 Company Prefix - or request GLNs directly if you already have a prefix.
- ✔ Define your locations - list all warehouses, stores, offices, or digital endpoints that need a GLN.
- ✔ Receive GLNs - we allocate unique numbers for each location.
- ✔ Integrate into ERP / WMS - update your systems and share GLNs with trading partners.
