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CL_Instance_Control Service is Gateway for interacting to different database DesignTime/RunTime and should be responsible for responding success or failure status on different operations.
The deployment of ControlLoops definition from DesignTime to RunTime Catalogue Database can we achived using deploy Rest Endpoint, in this process when a rest request is initiated from a client(Clamp) the CL_Instance_Control Service take cares of fetching ControlLoops metadata from DesignTime and creates in RunTime Catalogue Database, Deploy API ControlLoop Sequence diag will help you understand the flow.
Note: In future deploy Rest Endpoint might be updated to push ControlLoops not only in RunTime Database but to the participants involved in ControlLoop.
3.1.1: Deployment REST API
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