Regulations Governing Identity Verification Mechanism and Transaction Amount Limits of Electronic Payment Institutions Article 23

An electronic payment institution shall retain the data obtained in users and contracted institutions identity verification process and relevant records on carrying out the users and contracted institutions identity verification; the preceding provision applies when users and contracted institutions change their identity information.
中文原文 電子支付機構使用者身分確認機制及交易限額管理辦法第23條
電子支付機構應留存確認使用者與特約機構身分程序所得資料及執行各項確認使用者與特約機構身分程序之相關紀錄;使用者與特約機構變更身分資料時,亦同。

English translation for reference only; the Chinese text prevails. Not legal advice.