@startuml
participant REST
participant "ACM Runtime"
participant Participants
database "ACM Database"

REST -> "ACM Runtime": Review Automation Composition Instance
"ACM Runtime" -> "ACM Database": Read Automation Composition Instance Information

alt Automation Composition Instance exists
  "ACM Runtime" -> Participants: [ASYNC] Review AC Element Instances for this AC Instance
  "ACM Runtime" -> "ACM Database": Set AC Instance and its AC Element Instances to subState REVIEWING
  "ACM Runtime" -> REST: Review of Automation Composition Instance has been requested
else
  "ACM Runtime" -> REST: Automation Composition instance does not exist
end

@enduml