Build and deploy attached project. Start process instance using below REST API /kie-server/services/ rest /server/containers/ContainerID/processes/SignalIssueProject.testProcess/instances Wait for IntermedidateTimer to complete(delay 30 secs) After timer node execution ThrowingSignalEvent will be executed, its expected that it will signal the SignalBoundaryEvent of HumanTask but we can see humanTask is active. Try to signal process using REST API but still we can see HT is active. http: //localhost:8080/kie-server/services/ rest /server/containers/ContainerID/processes/instances/$pid/signal/signalName   Actual behaviour: Not able to signal SignalBoundaryEvent from MI subprocess through throwing signalEvent or through REST API.   Expected behaviour: User should be able to signal SignalBoundaryEvent from MI subprocess through throwing signalEvent or through REST API.