Red Mavericks’ blog published an article on the Process Data definition. “We have our BPMN process and if we only want to document our process, this is almost all the work we’ll need to do. However, Akino Fishing Co. wants to not only document, but also automate and execute the processes. For that, we need to define our process data.”
See http://redmavericks.com/blog/2015/03/19/process-data-definition/ for the complete article.