Relevant Regulated Intermediaries are urged to submit the BCAN-CID Mapping File via the Electronic Communication Platform (ECP) before 20 March 2023 to facilitate a smooth transition into HKIDR and ensure their clients’ BCANs and Client Identification Data (CID) are registered in preparation for subsequent trading.
In addition, HKEX also reminds that they need to ensure that all necessary authorization consents are obtained from its individual client regarding the collection, storage, processing, use, disclosure and transfer of personal data in relation to such client’s BCANs and CID.
resource: https://www.hkex.com.hk/-/media/HKEX-Market/Services/Circulars-and-Notices/Participant-and-Members-Circulars/SEHK/2023/CT01523E.pdf