The following elements belong to the execution design level and are not included in the current version of the BPMN 2.0 implementation.
Correlations (See: Business Process Modeling Notation (BPMN), version 2.0, page 136 and the following.)
Conversation Associations (See: Business Process Modeling Notation (BPMN), version 2.0, page 135 and the following.)
Error (See: Business Process Modeling Notation (BPMN), version 2.0, page 81 and the following.)
Interaction node (See: Business Process Modeling Notation (BPMN), version 2.0, page 123.)
Item definition (See: Business Process Modeling Notation (BPMN), version 2.0, page 91 and the following.)
Services (See: Business Process Modeling Notation (BPMN), version 2.0, page 104 and the following.)