Global Location Number

The Global Location Number (GLN) is part of the GS1 systems of standards.[1] It is a simple tool used to identify a location and can identify locations uniquely where required. This identifier is compliant with norm ISO/IEC 6523.[2]

The GS1 Identification Key is used to identify physical locations or legal entities. The key comprises a GS1 Company Prefix, Location Reference, and Check Digit.

Location identified with GLN could be a physical location such as a warehouse or a legal entity such as a company or customer or a function that takes place within a legal entity. It can also be used to identify something as specific as a particular shelf in a store. Being able to identify locations with a unique number is a key to many business processes. The GLN is used in electronic messaging between customers and suppliers, where location advice is important. GLN is also used within companies to identify specific locations both electronically in a database and physically where the GLN can be produced in a bar code or GS1 EPC tag.[3]

GLN structure

GLN is a 13-digit number structured as follows:

Global Location Number Structure
GS1 Company Prefix
(var. length)		 Location Reference Check Digit
N1 N2 N3 N4 N5 N6 N7 N8 N9 N10 N11 N12N13

EAN (GLN, GTIN, EAN numbers administered by GS1)

EAN (European Article Number) check digits (administered by GS1) are calculated by summing the even position numbers and multiplying by 3 and then by adding the sum of the odd position numbers.[4] To calculate the check digit, subtract the sum from the equal or nearest higher multiple of ten.[5] A GS1 check digit calculator and detailed documentation is online at GS1's website.[6] Another official calculator page shows that the mechanism for GTIN-13 is the same for Global Location Number/GLN.[7]

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See also

References
  1. GS1.org (2014-12-05). "Global Location Number (GLN)". gs1.org. Retrieved 2019-05-15.
  2. Eijk, Pim van der (2010-02-14). "OASIS ebCore Party Id Type Technical Specification Version 1.0". oasis-open.org/. Retrieved 2019-05-15.
  3. "Healthcare Supply Chain Data Standards FAQs". AHRMM - Advancing Healthcare Supply Chain. Retrieved 2019-05-15.
  4. "How to Calculate Ean13 Barcodes". Bizfluent. Retrieved 2019-05-15.
  5. "Check Digit Calculator – GS1 US". Gs1us.org. Retrieved 29 October 2018.
  6. "Check Digit Calculator". Gs1us.org. 2005. Retrieved 2012-08-09.
  7. "Check Digit Calculator, at GS1 US official site". Gs1us.org. Retrieved 2012-08-09.
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