BEAC Launches MyStandard Portal for ISO 20022 Message Formats

BEAC BANK OF THE STATES OF CENTRAL AFRICA Yaoundé, 11 NOV 2025 CIRCULAR LETTER N° IGF(I2O25 Regarding the online launch of the access portal to « MyStandard » for BEAC ISO 20022 formats

As part of the migration of the International Financial Community to the ISO 20022 standard, by Instruction N° 00VGV2025 of 17 November 2025, the Bank of the States of Central Africa (BEAC) has undertaken the modernization of its domestic environment through the adoption and implementation of this international standard in the RTGS SYGMA real-time gross settlement system.

SYGMA version 10, currently being deployed, introduces a proprietary format compliant with ISO 20022, to which participants' information systems must adapt to ensure exchange compatibility.

To facilitate the implementation of the standard and ensure harmonious compliance, BEAC makes the message specifications uploaded to the SWIFT MyStandard portal available to participants.

1. Portal Description The MyStandard portal is a collaborative web platform developed by SWIFT, allowing regulators or payment system managers to create, publish, and share ISO 20022 message specifications. BEAC has created a closed community named « CEMAC-BANK » on it, access to which requires a prior request and approval by the portal administrators. Once access is validated, users can:

• view the structure and drafting rules of BEAC's ISO 20022 messages;
• access available message examples;
• upload and test files generated by their internal systems;
• verify their compliance with the BEAC standard.

N°: S e}.Wl1,/*zt Bank of the States of Central Africa - Central Services 736 Monseigneur Vogt Ave - P.O. Box 191 7 Yaoundé (Cameroon) - Tel (237) 222 23 40 30 - www.beac.int - beac@beac.int

2. Portal Content and Usage Terms The message collection published by BEAC, titled BEAC_SYGMA ISO20022, comprises 29 messages distributed across three categories: a) administrative messages (ADMI): Admi.002, Admi.004. b) payment, clearing, and settlement messages (PACS): Pacs.002, Pacs.004, Pacs.008, Pacs.009, Pacs.010, Pacs.028. c) cash management messages (CAMT): Camt.007, 009, 010, 011, 018, 019, 025, 029, 033, 034, 046, 047, 048, 050, 051, 052, 053, 054, 056, 060, 998. A summary table detailing the equivalence between the new message formats and the old MT formats is attached to this circular. Furthermore, the CMA publisher's documentation on formats provides further details on use cases.

3. Portal Access Procedures Access to the portal is via MyStandards at the following address: * https://www2.swift.com/mystandards/. Connection requires a SWIFT.com user account. Once logged in, a search for the "CEMAC-BANK" community in the "Communities" tab must be performed, followed by an access request by clicking the "Request Access" button. The request will then be reviewed and validated by BEAC administrators, subject to recognition of the requester's institutional domain, and potentially the justification associated with the request. After validation, participants will be able to access: o the BEAC_SYGMA_ISO20022 collection containing all MX messages expected in SYGMA; o comments and rules applicable to each message; o message examples; o compliance testing tools integrated into the portal. All participants in BEAC's payment systems are invited to join the "CEMAC-BANK" community within a maximum period of one (1) month from the effective date of this note. This Circular Letter takes effect from its date of signature. /-

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Summary table detailing the equivalence between the new message formats and the old MT formats

MT	ISO	Name
MT996/ERR	Admi.002	Rejection message
MT999/PAS/SWORDEXPIRATION	Admi.004	Notification of future password expiration
MT996/STAT	pacs.002	Transfer status message
MT202 RETURN	pacs.004	Payment return
MT103	pacs.009	Customer transfer / Transfer to a general financial institution
MT204	pacs.010	Automatic debit message for financial markets
MT995/STAT	pacs.028	Transfer status request message
MT995/RTY	camt.007	Priority change request
MT999/GETOVERDRAFT	camt.009	Obtain overdraft threshold request
MT999/RETOVERDRAFT	camt.010	Notification on current overdraft threshold
MT999/SETOVERDRAFT	camt.011	Set overdraft threshold
MT999/GETBUSINESSDAYPERIOD	camt.018	Request for exchange day schedule
MT999/BUSINESSDAYPERIOD	camt.019	Notification of business day calendar
MT999/CHANGEPASSWORD/OK	camt.025	Successful password change notification
MT996/CANC	camt.029	Cancellation response message
MT995/DUPL	camt.033	Transfer copy request
MT996/DUPL	camt.034	Transfer copy
MT999/GETACCOUNTLIMIT	camt.046	Obtain reservation
MT999/RETACCOUNTLIMIT	camt.047	Return reservation
MT999/SETACCOUNTLIMIT	camt.048	Set reservation
MT202 RESCREDI	camt.050	Increase reservation
MT202 RESDEBIT	camt.051	Decrease reservation
MT941	camt.052	Balance report message
MT950	camt.053	Account statement message
MT900/910	camt.054	Debit/Credit confirmation
MT992	camt.056	Cancellation request
MT920/941	camt.060	Balance request message
MT999/TEXTMESSAGE	camt.998	Free text message

Bank of the States of Central Africa - Central Services 736 Monseigneur Vogt Ave - P.O. Box 191 7 Yaoundé (Cameroon) - Tel (237) 222 23 40 30 - www.beac.int - beac@beac.int

pacs.008 N°:SHQ.