ISO/IEC 6523,Information technology – Structure for the identification of organizations and organization parts, is aninternational standard that defines a structure for uniquely identifying organizations and parts thereof in computerdata interchange and specifies the registration procedure to obtain anInternational Code Designator (ICD) value for an identification scheme.

The standard consists of two parts:

Part 1: Identification of organization identification schemes^[1] defines a structure for the identification of organizations and parts thereof. The components of this structure are the following:

• anInternational Code Designator (ICD) that uniquely identifies the authority which issued the code to the organization, up to 4 digits
• anorganization identifier, up to a maximum of 35 characters
• an (optional)organization part identifier (OPI), up to a maximum of 35 characters (an "organization part" can beany kind of entity within an organization.)
• an (optional) OPI source indicator, 1 digit, specifying who attributed the OPI

Part 2: Registration of organization identification schemes^[2] defines the registration procedure for ICD values. This includes:

• the requirements on the registration authority for ICD values.
• the specific procedures for the allocation and deletion of ICD values
• the contents of the register/list of the registered identification schemes

Farance Inc. serves as the Registration Authority for ISO/IEC 6523 on behalf ofISO/IEC.

Further information concerning ISO/IEC 6523 and how to obtain an ICD value can be found atiso6523.info. The page includes contact details for the Registration Authority and alist of allocated ICD values. Asimilar list is part ofPEPPOL documentation.

ISO/IEC 6523 forms the basis of OSI naming underISO/IEC 8348OSI protocols. It also forms the1.3object identifier (OID) tree.

ICD allows registration of various identification schemes for organizations, locations (GS1Global Location Number), goods (GS1Global Trade Item Number), military organizations/activities (Department of Defense Activity Address Code), military suppliers (Commercial and Government Entity code), etc. It has been added toSchema.org as the propertyiso6523Code.

A widespread standard^[3] compliant with ISO 6523 norm is the identifier called "Global Location Number" (GLN), developed byGS1 company members. In B2B exchanges, it is widely used by companies to identify locations or functions within a location (for example a factory, the accounting department of a company, an administration, a warehouse, a delivery address, ...). It has become a key to exchange business messages (orders, invoices, ...) usingUN/EDIFACT specifications.

TheebCore Party Id Type Technical Specification was issued by theOrganization for the Advancement of Structured Information Standards (OASIS). It was elaborated by the OASISebXML Core Technical Committee and it specifies aUniform Resource Name (URN) namespace for organization identifiers. It bases upon ISO/IEC 6523, ISO 9735 andISO 20022.

• ISO/IEC standards

• Articles with short description
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• Use Oxford spelling from April 2012