Transaction validation needs to be done on the mobile application, and only applies to users with the role of order approval. You can browse the order on the web, at which point a notification will be sent to the mobile application. You open that message, select Confirm and enter the security code generated when registering the device to perform transaction authentication Or You can approve the order on the mobile application by selecting Request, selecting transaction to be approved, select Approve and enter the security code to authenticate the transaction.