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@startuml
participant "ACM Runtime"
participant Participant
participant AutomationCompositionElementListener

alt "instance Id and Composition Ids existPriming Compositon Target"
  "ACM Runtime" -> "ACM Runtime" : Create Compositon Target
  "ACM Runtime" -> Participant : [ASYNC] Prime Compositon Target
  Participant -> AutomationCompositionElementListener : Prime Compositon Target
  AutomationCompositionElementListener -> Participant : Compositon Target primed
  Participant -> "ACM Runtime" : [ASYNC] Compositon Target primed
end

alt "Migrating an instance to Compositon Target"
  "ACM Runtime" -> Participant : [ASYNC] Migration pre-check message from source to target composition
  Participant -> AutomationCompositionElementListener : Migrate pre-check AC Element
  AutomationCompositionElementListener -> Participant : Migrate supported / not supported
  Participant -> "ACM Runtime" : [ASYNC] Migration pre-check completed
  note right
  Returns AUTOMATION_COMPOSITION_STATE_CHANGE message.
  end note
end

@enduml