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@startuml
participant ACM_Runtime
participant Participant
participant Participant_API

ACM_Runtime -> Participant: [ASYNC] Unlock AC Element Instances for this AC Instance 

loop over AC Element Instances in AC Instance
 alt Does the primed Participant ID on this AC Element Instance\nmatch my Participant ID?
  alt Is this AC Element Instance administrative state not LOCKED
   ACM_Runtime <- Participant: [ASYNC] WARN: AC Element is not LOCKED
  else
   Participant -> Participant_API: Unlock AC Element Instance
   activate Participant_API
   deactivate Participant_API
   Participant <- Participant_API: Unlock AC Element Instance Response
   deactivate Participant_API
   alt AC Element unlocked successfully
    Participant -> Participant: Set AC Element Instance administrative state to UNLOCKED
    ACM_Runtime <- Participant: [ASYNC] INFO: AC Element has been unlocked
   else
    ACM_Runtime <- Participant: [ASYNC] ERROR: AC Element was not unlocked
   end
  end
 else
  note left of participant
   Ignore this AC Element instance as its for another participant 
  end note
 end
end

@enduml