Re: [w3c/browser-payment-api] Flows issue 32 (#131)

@AxelNennker said:

> When looking at the PaymentRequestUpdateEvent I was wondering whether the Payment App gets the updated Payment Details. From the sequence diagram it seems that the Payment App never gets the updated Payment Details like Shipping Address. Why is this?

You are correct. There is a distinction between the interaction between the website <-> browser and the website <-> payment app (where the browser is a proxy/mediator).

The collection of shipping data is entirely optional and would only be done by the website if required. This data is collected by the browser and provided back to the website in real0time so that the website can update the details of the payment request if necessary before it is passed to the payment app.

If the merchant wishes to pass the shipping info to the payment app they can do so by including it in the request details but this is only likely if the payment app requires it.

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