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ISO 20022
Universal financial industry message scheme

External code sets

Catalogue of messages

The ISO 20022 messages use external code sets which are validated and approved by the SEGs.

The listed codes can be used in specific elements of the messages as indicated in the documents below. Unlike other ISO 20022 code sets, the codes are not included in the message schema with the message element they type. The purpose of externalising these codes is to be able to update the code sets (for example, add new codes) without impacting the messages themselves and, hence, without requiring the development of a new version of the messages that use these code sets.

The code sets are published in two sets of documents: the External code Sets and the Bank Transaction Code Combinations.

Most of the external code sets are published in a spreadsheet which is versioned at three levels:

  • the spreadsheet itself has a publication date,
  • each code set within the spreadsheet has a publication date,
  • each individual code has a date of last update ('status date').

Submission and publication timeline

Change requests received by end of March, end of June, end of September and end of December are evaluated on a quarterly basis and approved updates are published respectively by end of May, end of August, end of November and end of February.

Download the External Code Sets

May 2021

Bank Transaction Code combinations and description

Dated 26 February 2021

Advance Information

The following zip contains the draft versions of the format of the external code sets in JSON, XSD and XLS. They are made available for information only.

Version: 18 October 2019

Request for updates

Requests for updates to External Code Sets (addition of a new code value, clarification of an existing definition, deactivation of an existing code value) must be submitted to the ISO 20022 RA, using the "Change Request for update of an External Code Set" template.

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