Option To Prevent User From Changing Invoice Amount

[jcorning99]

I've developed a web application that interfaces with PayPal Here using the Sideloader api. My application allows the user to fill a shopping cart with items. When they click the button to pay via credit card, I save all of the order details in our database before sending the invoice to PayPal Here. Once the payment is completed in PayPal Here, I reduce the inventory of the items that were sold.

The problem is that, once the user is in PayPal Here, they can "X" out of the payment pop-up window and modify the details of the invoice, which could change the payment amount. If they do this and then complete the payment, I will be able to detect the change in the total payment amount, but I won't know what items were changed to make the difference.

I am requesting that you add a parameter to the Sideloader API that would lock this down, so the user would not be able to change any details of the invoice within PayPal Here. All they could do is accept the payment for the amount of the original invoice, or cancel the order completely.

Thank you for considering this change!

[shankie-codes]

+1 for this. Ideally, I'd also like the option for the 'charge' button to be hit so that the user is simply presented with a "insert your card" screen – and nothing else. Cancelling at this point would force the app to open the return URL.

[RandomArray]

+1