StartableByRPC()
Any FlowLogic which is to be started by the RPC interface (net.corda.core.messaging.CordaRPCOps.startFlowDynamic and net.corda.core.messaging.CordaRPCOps.startTrackedFlowDynamic) must have this annotation. If it's missing the flow will not be allowed to start and an exception will be thrown.