LEI-CDF Version 3.1

Documentation last updated: 2021-03-04


As the Global LEI System (GLEIS) High Level Principles stipulate, the GLEIS should uniquely and unambiguously identify participants to financial transactions. The ISO 17442 Legal Entity Identifier (LEI) standard defines the following set of attributes as the most essential elements of identification: The LEI Common Data File format (LEI-CDF) was proposed by the Legal Entity Identifier Regulatory Oversight Committee (LEI ROC) as the additional standard necessary to support the GLEIS in maintaining exclusive assignment of LEIs (one LEI per entity) and identifying, remediating data quality issues, and supporting use of the data. It is maintained and developed as a technical standard by the Global LEI Foundation (GLEIF) with the collaboration and oversight of the LEI ROC. The LEI-CDF specifies in more detail: All LOUs use this file format to publish LEIs and their reference data.

Audience for this document

The target audience for this standard includes:

Status of this document

This section describes the status of this document at the time of its publication. Later versions may supersede this document. The most up to date version will always be available from www.gleif.org.

The file format references and honors previous completed work published by the LEI ROC in a document entitled "LEI Data File Format 1.0" (19 June 2014; available from www.leiroc.org).

Terminology and Typographical Conventions

Within this document, the terms, as will be SHALL and MAY, are to be interpreted as specified in Annex G of the ISO/IEC Directives, Part 2, 2001, 4th edition: When used in this way, these terms will always be shown in ALL CAPS; when these words appear in ordinary typeface, they are intended to have their ordinary English meaning.

The following typographical conventions are used throughout the document:


Please note:

Business Rules

The accompanying documentation in addition to this Technical Specification specifies business rules where applicable for each element. These are rules that are not enforced by validating against the XML schema, but are still mandatory for all Common Data File (CDF) format files.

XML Syntax

This section specifies the XML schema for an LEI data file conforming to this standard.

XML Design Rules

XML Schema

An XML file conforming to this standard SHALL be valid according to the following XSD 1.0 schema.

Release Notes

Version 3.1

Version 3.0

Version 2.1

Version 2.0

Version 1.0

The first release. Please find the published specification of LEI-CDF V1.0 at https://www.gleif.org/content/2-about-lei/5-common-data-file-format/lou-20140620.pdf

Abstract Data Content

This section specifies the abstract data content of a data file conforming to this standard. A data file conforming to this standard SHALL consist of:

LEI File Header

The LEI File Header describes the context for the LEI Data Records contained in the main body of the file. The header exists to answer such questions as where the data came from, when it was collected into this file, etc. The content of the header SHALL NOT be required to interpret the data content of any LEI Data Record; each LEI Data Record is self contained.

LEI Data Record

An LEI Data Record describes a single LEI registration. Each LEI Data record in a file conforming to this standard SHALL include data elements as described below:


The ISO 17442-compliant LEI of the legal entity described by this LEI Data Record. The LEI is assigned by the LOU.
A value of type LEIType in a file conforming to this standard SHALL be a 20-character Legal Entity Identifier conforming to ISO 17422. Conformance to ISO17442 includes having correct check digits.


Attributes describing the legal entity itself. The Entity data is supplied by the legal entity, and recorded and published by the LOU.


Attributes describing the registration of this LEI with an LOU. The Registration data is maintained by the LOU.


The optional Extension section of an LEI record may be used to include additional data not defined in this standard. This may include data specific to an LOU, data specific to a publisher of LEI data, and so on.
For example, an LOU may use Extension to publish additional data elements it collects as part of registration.
The following rules SHALL be observed: