Re: [webpayments] What is the use case for the Payment Details object? (#38)

Actually shipping address and line-item summary are passed not infrequently to the PSP and thence to the acquirer and it is supported in many PSP's APIs. The line item detail is also a good example of ancillary data that flows through the card networks. There's a whole spec (Visa Global Invoicing Specification) for a special product category of cards. Other examples of this include flight itinerary data

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