Billing data:
Billing data are the customer info that he provides when ordering a product or a service,
"first_name" ,"last_name" ,"email" ,"phone_number" are the mandatory data that's required by the issuing bank and must be provided.
"apartment", "floor", "street", "building", "shipping_method", "postal_code", "city", "country", "state" Must be hardcoded to be "NA" when you send it to Accept's server, you might keep the user's actual data but make sure you're sending the hardcoded ones.
"billing_data": { "apartment": "NA", "email": customer mail", "floor": "NA", "first_name": "customer firstname", "street": "NA", "building": "NA", "phone_number": "customer phone number", "shipping_method": "PKG", "postal_code": "NA", "city": "NA", "country": "NA", "last_name": "customer lastname", "state": "NA" }