During the 2008 financial crisis, regulators realised that a single identification code unique to each financial institution was not available worldwide. It means that each country had different code systems to recognize the counterpart corporation of financial transactions. Accordingly, it was impossible to identify the transaction details of individual corporations, identify the counterpart of financial transactions, and calculate the total risk amount. This resulted in difficulties in estimating individual corporation's amount of risk exposure, analyzing risks across the market, and resolving the failing financial institutions. This is one of the factors that made it difficult for the early evolution of the 2008 financial crisis.3
In response, the LEI system was developed by the 2011 G204 in response to this inability of financial institutions to identify organizations uniquely, so that their financial transactions in different national jurisdictions could be fully tracked.5 Currently, the Legal Entity Identifier Regulatory Oversight Committee (LEI ROC), a coalition of financial regulators and central banks across the globe, is encouraging the expansion of the LEI. The U.S. and European countries require corporations to use the legal entity identifier when reporting the details of transactions with over-the-counter derivatives to financial authorities. Today, authorities of 45 jurisdictions mandate the use of LEI code to identify legal entities involved in different financial transactions.
The first LEIs were issued in December 2012.6 As of 3 January 2018, LEIs are mandatory for all companies who wish to continue trading in securities.7
The technical specification for LEI is ISO 17442.8 An LEI consists of a 20-character alphanumeric string, with the first four characters identifying the Local Operating Unit (LOU) that issued the LEI. Characters 5 to 18 are the unique alphanumeric string assigned to the organization by the LOU. The final two characters are checksum digits,9 calculated using MOD-97-10 as per ISO/IEC 7064.
Even if the LEI code of an entity follows the technical ISO specification, the LEI code by itself does not provide any valuable information—it is only used to uniquely identify each legal entity.
The LEI reference data contains basic 'business card'-type information, also referred to a 'Level 1' data. It answers the question 'who is who?'.
The other part of the reference data, the 'Level 2' data answers the question 'who owns whom?'. If applicable, it will allow identification of direct and ultimate parents of any legal entity.
The Global Legal Entity Identifier Foundation (GLEIF) does not directly issue Legal Entity Identifiers, but instead delegates this responsibility to local operating units (LOUs). These LEI issuers supply different services. Local operating units can have different prices and LEI issuing speed for the registration services they offer. The LEI can be obtained from couple of hours to days or weeks, depending on the service provider. GLEIF is responsible for monitoring LEI data quality and integrity of the LEI system.1011
Other formal authority UID in legal context:
"Introducing the Legal Entity Identifier (LEI) – About LEI – GLEIF". gleif.org. https://www.gleif.org/en/about-lei/introducing-the-legal-entity-identifier-lei ↩
"Questions and Answers – About LEI – GLEIF". gleif.org. https://www.gleif.org/en/about-lei/questions-and-answers ↩
Groenfeldt, Tom (August 24, 2011). "Legal Entity Identifier (LEI) ID Code for Banks and Subs Delayed Until 2012". Forbes. https://www.forbes.com/sites/tomgroenfeldt/2011/08/24/legal-entity-identifier-lei-id-code-for-banks-and-subs-delayed-until-2012/ ↩
"What is the LEI system?". Open LEIs. Retrieved 26 May 2016. http://openleis.com/info/about_the_LEI_system ↩
"The Legal Entity Identifier (LEI) Is Good News for Financial Technology Developers". Data.gov. 21 May 2014. Archived from the original on 26 May 2016. Retrieved 26 May 2016. https://web.archive.org/web/20160526193130/https://www.data.gov/consumer/legal-entity-identifier-lei-good-news-financial-technology-developers/ ↩
"Legal Entity Identifier Resource Center". Sifma. Retrieved 26 May 2016. http://www.sifma.org/issues/operations-and-technology/legal-entity-identifier/overview/ ↩
"UK MiFIR – Legal Entity Identifiers". fca.org.uk. Financial Conduct Authority. December 31, 2020. Retrieved November 25, 2021. https://www.fca.org.uk/markets/mifid-ii/legal-entity-identifier-lei-update ↩
"The Structure of the LEI Code". GLEIF. Retrieved 26 May 2016. https://www.gleif.org/en/lei-focus/what-is-an-lei/lei-code-structure# ↩
GLEIF. "How to Get an LEI: Find LEI Issuing Organizations – About LEI – GLEIF". gleif.org. Retrieved 2017-10-18. https://www.gleif.org/en/about-lei/how-to-get-an-lei-find-lei-issuing-organizations ↩