@startuml
participant Participant_API
participant Participant
participant ACM_Runtime

Participant_API -> Participant_API: Perform Operation that Updates Operational State
activate Participant_API
deactivate Participant_API

Participant_API -> Participant: Operational State has been updated
Participant -> Participant: Update Operational State in ACM Element Instance

== Periodically with Heartbeat ==
Participant -> ACM_Runtime: [ASYNC] Heartbeat message including\nstatus and states of AC Element Instances on Participant

@enduml