A data flow diagram describes the data flow of an executable process step in Process Governance. It has exactly one superior object from the control flow. This means that for objects that have multiple object occurrences in a business model, each of these object occurrences has its own data flow diagram. The same applies to object occurrences that have the same object definition.
The input data for a particular object is normally modeled in a data flow diagram. In exceptional cases (for example, for objects of the Human task or Automated task type), you can also model output data. However, this data can be modeled only in the form of variables by:
directly assigning a data field from the task to the variable.
combining variables with a task's data field using the Concatenate operator.
Process automation is possible only if data flows are modeled correctly (see Data Flow Design document in the Documents\English directory on the installation media).