Invoice schema - paymentUrl

Hi Vicki and Tom,
I saw your thread "New schema for Invoices" and looks like it has already been published - http://schema.org/Invoice One property that seems to be missing is "paymentUrl". I do see it as part of http://schema.org/Order, but should we also add it to Invoice?
Thanks,Vaibhav 

Received on Friday, 6 February 2015 08:45:18 UTC