Workflow Data Objects (WDOs) are the set of variables that transport data between activities in a workflow process. WDOs are mapped to activities in order to define the parameters for business processes which are called by the activity. For example, if information regarding a case and its owner is needed to perform an activity, a WDO can be mapped to that activity. This WDO would include two attributes: one for the case identifier and the other for the case owner.
WDOs must be added to a workflow process definition so that they can be mapped to the activities. Templates can be created for WDOs that are used in a number of workflow process definitions, e.g., a template can be created for the case identifier. This eliminates the need to manually add the same WDOs to every workflow process definition.