Hi Kris,
Thanks for clarifying that, i'd made the assumption based on what i'd seen within the invoice section of the site and it felt to me like this would be a merchant side invoicing solution, maybe it is, but the invoice API doesnt follow that same approach. i think when i tried just using the example info with my API it told me there wasnt an invoice, or it was an invalid invoice or something, so that just seemed to confirm it was something where you'd issue an invoice and the API would then process it.
I'll see what i can make of the pdf and a bit of time trying stuff, im in a bit of a hurry because having just set up the basics with Bitpay im rather unimpressed, not entirely sure BIPS is better on those aspects, but im unimpressed enough to try it.
Paul