Will the userAuthorizationId change if the user deleted PayPay account and re-registered again with same phone number? August 14, 2024 10:12 Yes, the userAuthorizationId will change. Related articles Please provide the IP address of Webhook notification source server. Please tell me why the "SESSION_NOT_FOUND" error is returned when fetching the status of Account Link QR Code? If user's phone number has been changed, will userAuthorizationId also been changed? I want to cancel my PayPay merchant agreement, what should I do? Is it possible to specify an IP address for the callback domain of user authorization?