BPMN element: <bpmn2:userTask>.

Description: Task that requires a human interaction with a UI or a programmed API.

Configuration: Use Actors or Groups for assigning the task to the users. Use the Assignments, DataInputSet, and DataOutputSet properties for task parameter mapping to the enclosing process instance.

BPMN element: <bpmn2:sendTask>

Description: General-purpose task for a send message action

Configuration: The MessageRef property is a key to the ID attribute of a message element (bpmn2:message), which must be defined in the process scope

BPMN element: <bpmn2:receiveTask>

Description: General-purpose task for a receive message action

Configuration: The MessageRef property is a key to the ID attribute of a message element (bpmn2:message), which must be defined in the process scope

BPMN element: <bpmn2:manualTask>

Description: Task whose purpose is oriented to documenting that an action must be performed manually and that it can be ignored by the engine

BPMN element: <bpmn2:serviceTask>.

Description: Service task that supports a Java or SOAP WebService call.

Configuration: Use the ServiceImplementation, ServiceInterface, and ServiceOperation properties to configure the callable service/class. The WebService implementation requires the WSDL URL to be imported in the global scope (process imports).

BPMN element: <bpmn2:businessRuleTask>

Description: Task that executes a Drool rule

Configuration: Use the Ruleflow Group property to select the name of the Rule Group that defines the set of rules that you need to execute

BPMN element: <bpmn2:scriptTask>

Description: Task that executes Java or MVEL scripts

Configuration: Use the On Entry Actions, On Exit Actions, and Script language properties

BPMN element: <bpmn2:task>

Description: Ad hoc task

Configuration: You must register a WorkItemHandler with the task key