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