We want to offer subscriptions which should be payable using PayPal. We will use Reference Transactions for that. We're using PHP so I use the Merchant-SDK-PHP since the newer PayPal-PHP-SDK doesn't support Reference Transactions yet.
In the sandbox it already works, but now PayPal sent us some additional requirements I never read before:
> - Pass Buyer IP address for each transaction (where the user is participating)
> - Pass Shipping Address - always required
> - Prompt new Billing Agreement upon new Shipping address - when the user adds a shipping address to their account on the merchant's site, which hasn't been used previously, the billing agreement should be voided and re-created.
Unfortunately I don't understand even one of the requirements. First, I don't know how I'm supposed to send the shipping- or IP address with the SDK since I can't find a property for that. And why should we send this data anyway? PayPal gets the IP address of the user when he confirms the payments. Also, when we have to create a new billing agreement every time the user changes his shipping address PayPal always knows the current shipping address. Again, I don't know how to pass a new shipping address to PayPal in case the customer wants to change it.
