Is it possible to uniquely identify a user with userAuthorizationId? August 13, 2024 10:56 Updated Yes, it is possible, because a userAuthorizationId is created for each clientId + PayPay user ID. Related articles What is the behavior like when a request is conducted with an expired userAuthorizationId? Is the orderItems item displayed to users from the app? If user authorization is performed multiple times by the same PayPay user with the same clientId, does the userAuthorizationId change each time? Return to top Back to Home