Two questions: 1) Why would the above attempt result in 400? It is the example "Vacation Request" process definition in Activiti. 2) How do I determine which fields need to be included in this request to begin with? For example, is there a way to example the process definition to determine it needs: "employeeName", "numberOfDays", etc in order to start it.
OK, i have solved the item #1. It appears the Format of the variables was wrong. Here is the right format (see below). I still really need answer to #2 though, thank you.