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ISO 20022 external code set

ExternalAuthorityExchangeReason1Code: Authority Exchange Reason Codes

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Specifies the reason for the exchange with the national competent authority, as published in an external category purpose code list.

Definition from the ISO 20022 External Code Sets, 2Q2026 (published 28 Aug 2026).

13 codes in use. External code sets are published outside the message schemas and updated every quarter, so a new code can appear without a new message version.

Codes

  • ADHRAd Hoc RequestAd hoc request.
  • CABBCompetent Authority For Buyer BranchCompetent Authority for Buyer Branch.
  • CABCCompetent Authority For Basket ConstituantCompetent Authority for Basket Constituant.
  • CABTCompetent Authority For Buyer Transmitting FirmCompetent Authority for Buyer Transmitting Firm.
  • CADBCompetent Authority For Decision Making BranchCompetent Authority for Decision Making Branch.
  • CADUCompetent Authority For Direct UnderlyingCompetent Authority for Direct Underlying.
  • CAEBCompetent Authority For Executing BranchCompetent Authority for Executing Branch.
  • CAFICompetent Authority For InstrumentCompetent Authority for Instrument.
  • CAIXCompetent Authority For IndexCompetent Authority for Index.
  • CAMBCompetent Authority For Membership BranchCompetent Authority for Membership Branch.
  • CASBCompetent Authority For Seller BranchCompetent Authority for Seller Branch.
  • CASTCompetent Authority For Seller Transmitting FirmCompetent Authority for Seller Transmitting Firm.
  • CATVCompetent Authority For Trading VenueCompetent Authority for Trading Venue.

Messages that use ExternalAuthorityExchangeReason1Code

MessageElement path
auth.016Tx/New/TechAttrbts/XchgRsn

All ISO 20022 code sets · ISO 20022 messages

The ISO 20022 code set names, code values, names and definitions on this page are reproduced from material published at iso20022.org under the ISO 20022 Intellectual Property Rights policy. This is not the official source: the up-to-date ISO 20022 standards and repository material are published only at iso20022.org. Explanations in our own words are by ZagTrader. ZagTrader is not affiliated with or endorsed by ISO or Swift.