Our scenario was to send an IDoc from a SAP R/3 system to a HTTP Service through XI. So two systems were involved, R/3 and HTTP, but we had only one sender interface and two receiver interfaces. Both the receivers were present on the same HTTP service and based on certain condition, each one of them would be called at runtime.
I remember reading this XPath to show the path (Multiple Receivers) in which XPath is used in receiver determination to route a message to different systems.
But in our scenario we had to route a message to two different interfaces present on the same system i.e. we had to use XPath during Interface Determination.
In the Configuration part during the creation of Interface Determination, we can specify condition based on which the routing of the message has to be done. Here we can specify the inbound interfaces which has to be chosen at runtime based on some particular condition
Click on the +, one more row is added. Now you can see the Condition column.
Specify the condition on which the inbound interface is to be chosen by using the condition editor.
Once the interface determination is done for these interfaces, and each component is activated, the message finds its path without any obstacles.