• Background
• About this Document
• Mapping AREQ Data to Sources
• Data Known to the Browser
• Defined in Payment Request API
• Data about the browser
• Data Potentially Known to the Browser
• Data about the merchant / transaction
• Data Known to the Payment Handler
• Defined in Basic Card
• 3DS Protocol data
• User account data
• Computable data
• Unsure
• Browser API for data related to method_url