Common Understanding on International
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PublisHed in 2019. ISBN 978-92-9261-612-0 (print), 978-92-9261-613-7 (electronic) Publication Stock No. TCS190144-2 DOI: http://dx.doi.org/10.22617/TCS190144-2 The views expressed in tHis publication are tHose of tHe autHors and do not necessarily reflect tHe views and policies of the Asian Development Bank (ADB) or its Board of Governors or tHe governments tHey represent. ADB does not guarantee tHe accuracy of the data included in this publication and accepts no responsibility for any consequence of tHeir use. THe mention of specific companies or products of manufacturers does not imply tHat tHey are endorsed or recommended by ADB in preference to others of a similar nature tHat are not mentioned. By making any designation of or reference to a particular territory or geograpHic area, or by using tHe term “economy” in this document, ADB does not intend to make any judgments as to the legal or other status of any territory or area. This work is available under tHe Creative Commons Attribution 3.0 IGO license (CC BY 3.0 IGO) https://creativecommons.org/licenses/by/3.0/igo/ By using the content of this publication, you agree to be bound by the terms of this license. For attribution, translations, adaptations, and permissions, please read the provisions and terms of use at https://www.adb.org/terms-use#openaccess This CC license does not apply to non-ADB copyrigHt materials in tHis publication. If tHe material is attributed to another source, please contact tHe copyrigHt owner or publisher of tHat source for permission to reproduce it. ADB cannot be Held liable for any claims tHat arise as a result of your use of tHe material. Please contact [email protected] if you have questions or comments with respect to content, or if you wish to obtain copyrigHt permission for your intended use tHat does not fall witHin tHese terms, or for permission to use tHe ADB logo. Corrigenda to ADB publications may be found at http://www.adb.org/publications/corrigenda. Notes: In this report, international standards for naming conventions—International Organization for Standardization (ISO) 3166 for economy codes and ISO 4217 for currency codes—are used to reflect the discussions of the ASEAN+3 Bond Market Forum to promote and support the implementation of international standards in financial transactions in the region. ASEAN+3 comprises tHe Association of SoutHeast Asian Nations (ASEAN) plus tHe People’s Republic of CHina, Japan, and the Republic of Korea. ADB recognizes “hong Kong” as hong Kong, CHina; “Korea” as tHe Republic of Korea; “CHina” as tHe People’s Republic of China; and “Vietnam” as Viet Nam. The currencies of ASEAN+3 as defined in ISO 4217 are tHe Brunei dollar (BND), Cambodian riel (KhR), CHinese renminbi (CNY), hong Kong dollar (HKD), Indonesian rupiaH (IDR), Japanese yen (JPY), Korean won (KRW), Lao kip (LAK), Malaysian ringgit (MYR), Myanmar kyat (MMK), Philippine peso (PhP), Singapore dollar (SGD), Thai baht (ThB), and Vietnamese dong (VND). Contents Tables and Figures v Acknowledgments vi Statement from the Chairs of the Cross-Border Settlement Infrastructure Forum vii Abbreviations viii Overview 1 PART 1: International Standards for CSD–RTGS Linkages 3 1 Introduction 3 2 International Standards to Be Used for CSD–RTGS Linkages 4 2.1 ISO 20022, for Messages 4 2.2 ISO 3166, for Country Codes 5 2.3 ISO 4217, for Currency Codes 5 2.4 ISO 6166, for Securities Numbering 5 2.5 ISO 9362, for Financial Institution Identification 6 2.6 ISO 8601, for Date and Time Format 8 3 Remaining Challenges 8 3.1 Identification of Cross-Border Messages 8 3.2 OtHer International Standards 9 3.3 Account-Numbering Conventions 9 4 Possible Opportunities 9 PART 2: User Requirements and Technical Specifications for GatewaYs for CSD–RTGS Linkages 12 1 Introduction and Background 12 2 Overview of CSD–RTGS Linkages 13 2.1 Cross-Border Delivery-versus-Payment Linkage 13 2.2 Cross-Border CSD Linkage 14 2.3 Payment-versus-Payment Linkage 15 Contents iv 3 Possible Requirements and Specifications for GatewaYs 16 3.1 Outline of User Requirements 16 3.2 Possible TecHnical Specifications 17 3.3 Interoperability througH the Adoption of International Standards 18 3.4 Cross-Border Network Connecting CSD and RTGS Systems 18 3.5 Cross-Border Business Continuity Planning and Cybersecurity 19 3.6 OtHer Specifications 19 4 Conclusions 20 Appendixes 1 Possible GatewaY Features 21 2 Basic Concept for Network Providers 24 References 27 Tables and Figures Tables 1 ASEAN+3 Country Codes, Currency Codes, and National Numbering Agencies 6 2 BICFIs of Central Securities Depository and Real-Time Gross Settlement System Operators in ASEAN+3 7 Figures 1 Structure of the Report 2 2 Central Securities Depository–Real-Time Gross Settlement Linkages Model 3 3 Financial Market Infrastructure Transformation into a Regional Settlement Intermediary 10 4 Central Securities Depository and Real-Time Gross Settlement Gateway Function 12 5 Cross-Border Delivery-versus-Payment 14 6 Cross-Border CSD Linkage 15 7 Payment-versus-Payment Linkage 15 8 Cross-Border Connections 19 A1.1 Possible Gateway Configuration 21 A1.2 Gateway Security 23 A2 Network Provider 24 Acknowledgments The Asian Development Bank (ADB), as Secretariat of tHe Cross-Border Settlement Infrastructure Forum (CSIF), would