We've created a java extension that makes an RFC call (via JCo API) to a remote SAP R/3 system. Typically, our java method receives an input parameter (String) from a specific field in the input xml file and passes that parameter to the remote function. The mapping was designed using the mapping tool.
Since our mapping function (our java extension) didn't work properly, I've added some "System.out.println(...)" in our java method and realized that the input parameter was empty?!? If I hard code the value before making the RFC call, everything works fine.
My knowledge of XI and its mapping tool is quite limited... Aside from connecting all those objects together: source input field --> java extension --> target output field (again, using the mapping tool), what do we need to do to make this kind of mapping work?
Thanks a lot!