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ExternalSystemPartyType1Code

CSDY Code: Central Securities Depository

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CSDY means central securities depository in the ISO 20022 system party type code set. Infrastructure that holds or controls the holding of physical or dematerialized financial instruments belonging to all, or a large portion of, the investors in a securities market. This effects the centralized transfer of ownership of such securities by entries on its books and records.

Code
CSDY
ISO name
CentralSecuritiesDepository
Status
Registered
Last updated
2025-02-28

Official definition

Infrastructure that holds or controls the holding of physical or dematerialized financial instruments belonging to all, or a large portion of, the investors in a securities market. This effects the centralized transfer of ownership of such securities by entries on its books and records.

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

Messages and fields that use ExternalSystemPartyType1Code

MessageElement path
reda.014Pty/Tp/Cd
reda.015SchCrit/Tp/Cd
reda.017RptOrErr/PtyRpt/PtyOrErr/SysPty/Tp/Cd
reda.019SchCrit/PtyTp/Cd
reda.021RptOrErr/SctiesAcctRpt/SctiesAcctOrErr/SctiesAcct/PtyTp/Cd
reda.041PtyActvty/Chng/Rcrd/Tp/Od/Cd, PtyActvty/Chng/Rcrd/Tp/New/Cd
reda.043RptOrErr/PtyAudtTrlRpt/PtyAudtTrlOrErr/AudtTrl/Rcrd/Tp/Od/Cd, RptOrErr/PtyAudtTrlRpt/PtyAudtTrlOrErr/AudtTrl/Rcrd/Tp/New/Cd

CSDY questions

What does CSDY mean in ISO 20022?
CSDY is Central Securities Depository in the ExternalSystemPartyType1Code code set: Infrastructure that holds or controls the holding of physical or dematerialized financial instruments belonging to all, or a large portion of, the investors in a securities market. This effects the centralized transfer of ownership of such securities by entries on its books and records.
Where does CSDY appear in a message?
For example in reda.014, element Pty/Tp/Cd.

All ExternalSystemPartyType1Code codes · ISO 20022 code sets

The ISO 20022 code 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.