What is XML-RPC?
It’s a spec and a set of implementations that allow software running on disparate operating systems, running in different environments to make procedure calls over the Internet.
It’s remote procedure calling using HTTP as the transport and XML as the encoding. XML-RPC is designed to be as simple as possible, while allowing complex data structures to be transmitted, processed and returned.
You can find more information in: http://www.xmlrpc.com/
This is a schema for XML-RPC used in BizTalk:
XML-RPC Schema (9.04 KB)
Microsoft | TechNet Gallery
You can download XML-RPC Schema from GitHub here: