A Global Location Number (GLN) is a global code identifying a location, i.e., an electronic address.
Its mission is to facilitate information exchanges between companies in the supply chain. The aim is to identify a location in a unique and unambiguous way.
GS1 regulations specify that each company must create a series of GLNs to identify all the physical locations, legal entities and operational locations involved in their business transactions.
GLN and EDI
The use of a GLN is key in any information exchange in the supply chain and is the first step in using EDI to communicate with partners.
Each company engaged in an EDI communication must be previously identified with a GLN code. The GLN code travels with the information in the EDI message structure and prevents the duplication of locations as each partner has its own identifier.
A GLN code can also be used for communications inside a company.
Like the GTIN, the GLN is formed of 13 digits. The information associated with the GLN is the company name, tax identifier, location, type of place, street address, phone number, email address, contact person, billing details, etc.
Its purpose is to simplify information and goods exchanges, assigning a code to different companies.