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Experian Match release notes


Oct 11, 2018

Experian Match API v2.11.0

This release of Experian Match introduces transposed names matching and general maintenance work.


  • Experian Match now supports matching of transposed names (e.g. JOHN SMITH vs. SMITH JOHN).
    • Transposed names are matched at L1 by default in all default 'individual' scenario rule sets
    • New TransposedNameCompare rule comparator is available in rules creation
    • New Surname-RootName, Full_Name and Full_Name-RootName elements are available in blocking key and rule configurations
  • Default blocking key resource files now available within Default Configurations directory 
  • Default rule resource files moved to a new Default Configurations directory

Address standardization: 

  • A new version (4.6.5) of Standardize is available
  • A new version (4.1.6) of data is available for Standardize. It includes:
    • Full standardization support for Puerto Rico addresses in the USA
    • Further improvements to addresses in Australia, UK, and the USA

Breaking changes

All GET default blocking key configuration endpoints have been removed from the REST API and replaced with the Default Configurations directory (see Enhancements section for detail).


August 8, 2018

Experian Match API v2.10.0

This release introduces full Linux and MYSQL compatibility, performance improvements of up to 30%, and a change to MatchStatus (now returns a numeric value instead of a keyword).


  • MatchStatus is now represented by a number:
    • {0, 1, 2, 3, 4} replaces {Exact, Close, Probable, Possible, None}
    • The rules use {L0, L1, L2, L3} by default, but aliases can be included at the top to represent any match level in the rules
    • The default rules have been updated to use the above alias functionality
  • Experian Match is now fully supported on Linux and compatible with MYSQL for input, output and match store connectivity.

Address standardization: 

  • A new version of Standardize (4.5.4) is now available. This includes overall job performance improvements of up to 30%.
  • A new version of data (4.1.5) is available for Standardize. This includes various improvements to addresses in Australia, Germany, Italy, the United Kingdom and the United States of America.

Bug fixes

Records containing only a full stop in the forename field no longer cause records to match together unexpectedly.

Breaking changes

  • MongoDB support has been removed from Match; please update your integration to use other connection types.
  • Match status will now be returned as {0, 1, 2, 3, 4} instead of {Exact, Close, Probable, Possible, None}. Integrations will have to be updated to reflect this change in the output clusters.
  • The default rules have been updated with alias functionality to support the Experian Match status changes. However, any custom rules files will have to either:
    • have all the match levels renamed as {L0, L1, L2, L3} instead of {Exact, Close, Probable, Possible} throughout the rules file
    • or have the following four lines added to the top of the file:

define Exact as L0

define Close as L1

define Probable as L2

define Possible as L3


July 19, 2018

Experian Match API v2.9.2

This release includes configuration bug fixes and introduces a new way that the Match_Status output field is used.


Match_Status change

Match_Status now represents the lowest score obtained between any two records in a cluster and will be the same value for all the records in that cluster.

Address standardization

A new version of data is available: Standardize 4.1.4. This version includes various improvements to addresses in Australia, Germany, Italy, the United Kingdom and the United States of America.

Bug fixes


  • Configuration IDs are no longer re-used after a configuration is deleted. This is to prevent sessions using configurations that were not originally intended for that session.
  • Creating a session with invalid match store configuration settings will now fail with a useful error message.

Breaking changes

  • If you were using the Match_Status output field to filter clusters based on that value, you may have to update your integration for the change to take effect.
  • The new version of GDQ Standardize is not compatible with the existing Windows service. You have to remove it via the new script using the uninstall option before setting up the new service.


Jun 22, 2018

Experian Match API v2.9.1

This release introduces COMPANY as a new input type and includes some general bug fixes.


New input type: 

  • COMPANY has been added as an input type and can be used to explicitly define organization fields on input rather than being inferred from the ADDRESS field.

Address standardization: 

  • A new version of data (4.1.3) is available for Standardize.
  • This includes significant improvements for German and Italian addresses.

Bug fixes

Transactional updates: 

  • Where an update or delete results in a cluster of two records being split, both records now correctly display unique cluster IDs and a match level of NO MATCH.
  • Deleting a single record from a two record cluster now correctly displays an outcome of DELETE_RECORD and not DELETE_CLUSTER.

Match quality improvements: 

  • Record pairs are now classified as NONE instead of POSSIBLE matches where only the surname and locality OR surname and postcode matches.
  • The Postcode.StandardSpelling field is now always populated and allows matching between postcodes supplied on input or derived from town and locality.
  • Matching is now improved for addresses containing slashes. E.g. “2/L, 10 Morningside Drive, Edinburgh, EH10”.


Jun 1, 2018

Experian Match API v2.9.0

This release improves performance, adds new tuned rules for USA as well as refining rules for existing countries.


Performance improvements: 

  • Rules execution is now 25% faster after improvements in the evaluation of rules.
  • The new default blocking keys will result in improved performance when matching on individuals. The exact performance improvement will vary depending on the shape of the data being processed.
  • The new record hash comparison will result in improved performance where duplicate records are textually exact. The exact performance improvement will vary depending on the shape of the data being processed.
  • Address Standardization can now be bypassed where the data has been previously standardized. This will result in a 30-40% performance improvement, if used.
  • The default rules have been refined to minimize the time needed to score two records.

Rules changes: 

  • Rule evaluation has been simplified to allow for hierarchical evaluation i.e. {Theme}.Exact implies {Theme}.Close and a positive result from the Exact rule would mean that Close is also true, and will not be evaluated.
  • Default rules are now available for USA
  • Default rules for all countries now allow for a change of surname in matching.
  • A new HASH blocking key and rule comparator has been added to allow for exact textual comparison of records.

Address standardization: 

  • A new version of data is available for Standardize, this is 4.1.2.
  • This includes significant improvements for:
    • USA addresses
    • Italian addresses
  • Standardization can now be bypassed where the data has been pre-standardized by Experian Batch.

Breaking changes

Experian Match 2.9.0 is not compatible with Aperture Data Studio 1.1. Please upgrade to Aperture Data Studio 1.1.4 or later.


Mar 29, 2018

Experian Match API v2.7.1

This release adds a new data connector, input types and performance improvements, alongside general fixes and improved clustering.


  • Improved clustering of low confidence matched records.
  • Email and Phone data types added.
  • JMS input and output connectors added. This will allow the use of message queues such as ActiveMQ.
  • A new system status endpoint has been added which exposes information on the current licensing status.
  • Intermediary match stores can be optionally purged on job completion.
  • Jobs can be queued if one is already running and cancelled if queued or running.
  • Performance improvements for GDQ Standardize, resulting in a 25% improvement for Match jobs.
  • Improvements to the performance of transactional Add/Update operations.

Breaking changes

Any existing integrations with Match will have to be updated to account for the following changes: 

  • GDQ Standardize will need to be updated to version 4.0.0. New prerequisite: .NET Framework 4.6.2.
  • The job state of “STARTED” has been changed to “PENDING”. A processing job will continue to have the state of “RUNNING”.
  • Licensing has changed and a new license key will be supplied. Please refer to the licensing information in the documentation for details.


Dec 12, 2017

Experian Match API v2.4.0

This release adds performance and stability improvements allowing for higher capacity processing, alongside general fixes and better default matching behaviour.

In addition, Match now allows the configuration of grouped elements of any input type opening up the ability to process multiple names, addresses and/or generic elements.


  • Stability improvements when processing large inputs.
  • Grouping ability allows multiple names, addresses and other generic input fields to be matched.
  • Updated rules and resources for UK and Australia leading to higher country address match coverage.
  • Stored Blocking Keys are stored securely using SHA-256 hashing.
  • New API method for retrieving default blocking keys per country.
  • Granular name elements, including Forenames and Surname can now be specified in input.
  • Better handling of non-alphabetic characters in Field group names.
  • Improvements to cancelled/failed job error handling.

Breaking changes

Any existing integrations with Match will need to be updated to account for the following changes: 

  • Search and Transactional operations will fail against existing Match Stores due to the new salt and hash of blocking keys. Consult the documentation for how to turn off hashing to continue using your existing sessions, or alternatively recreate your Match store.
  • Existing Match rules that include field groups for multiple generic strings will need to be prefixed by the field group name with a hash symbol e.g.


    Must now be written as


    This hash notation only applies to the field group when it is used in the rules; no changes are required to the blocking keys or input field mappings.


Sept 15, 2017

Experian Match API v2.0.0

The latest version of Experian Match adds the ability to perform transactional updates against a match store.  Allowing users to synchronise the match store with operational systems, maintain linkage across data silos and trap and cascade contact data changes across the organisation. 


  • Match store can be maintained over time through a set of add, delete and update REST API requests.
  • Addition of Date data type for matching.
  • New API methods for configuring blocking keys
  • Addition of blocking key statistics to improve performance tuning
  • Clustering algorithm updated to produce optimal clusters where multiple potential matches/clusters exist
  • Support for different match rules for real time search and initial build of the match store
  • Improved logging for standardisation errors
  • Support for encrypted SQL Server data stores

Breaking changes

Any existing integrations with Match will need to be updated to account for the following changes:

  • The Match API is now at version 2. All API calls will need to be changed to v2 instead of v1.  Additionally, blocking key ids are now required when creating a session endpoint.
  • The match store schema has been altered. New tables have been added and the INDEX table has been modified.  It is required that the match store is re-created from scratch.