@startuml
Commissioning_REST -> CLAMP_Runtime: De-Prime Automation Composition Type Definition
alt Automation Composition Instances exist for Automation Composition Type
	Commissioning_REST <- CLAMP_Runtime: Cannot decommission Automation Composition Type Definition
else No Automation Composition Instances exist for Automation Composition Type
	Participant <- CLAMP_Runtime: Participant Update\n[Remove Automation Composition Element Definitions\nfrom Participants in Automation Composition]
	activate Participant
	Participant -> Participant: Delete Automation Composition Element\nType Definitions and\nCommon Property Values
	Participant -> CLAMP_Runtime: Participant Update Ack [from each Participant mentioned in Participant Update message]
	deactivate Participant
@enduml