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The ISO 17442 standard

defines a set of attributes or reference data of legal entities, which are the main identification elements. The LEI (Legal Entity Identifier) code itself is neutral and does not contain embedded message or country codes that may be unnecessarily complicated for users.

The ISO 17442 standard specifies the minimum reference data that must be provided for each LEI. This data is commonly referred to as Level 1 data – who is who?

The official name of the legal entity as recorded in the official registers, the registered address of the legal entity.
The registered address of the legal entity.
The country of registration.
The codes used to represent the names of the countries and their subunits.
The date of the first LEI issuance, the date of the last update of the LEI information and the expiration date, if applicable.

The codes used to represent the names of countries and their subunits.
The date of the first LEI assignment, the date of the last update of the LEI information, and the expiration date, if applicable.