@Suchet Renge There is no reason that you should not be able to auto-terminate a relationship via the rest-api. Are you seeing some error when trying to execute that specific rest-api endpoint? - Keep in mind that you can not Auto-terminate a relationship that is currently connected to another component. You must first either remove that relationship from any connection to which it has been assigned or delete the entire connection containing that relationship. - Here is a sample rest-api call to set relationship "success" to auto terminate on a logAttribute processor: curl 'http://<nifi-hostname>:<nifi-port>/nifi-api/processors/<processor UUID>' -X PUT -H 'Content-Type: application/json' --data-binary '{"component":{"id":"<processor UUID>","name":"LogAttribute","config":{"concurrentlySchedulableTaskCount":"1","schedulingPeriod":"0 sec","executionNode":"ALL","penaltyDuration":"30 sec","yieldDuration":"1 sec","bulletinLevel":"WARN","schedulingStrategy":"TIMER_DRIVEN","comments":"","runDurationMillis":0,"autoTerminatedRelationships":["success"]},"state":"STOPPED"},"revision":{"clientId":"9ef6f9e3-0168-1000-82cb-02214bcbc612","version":10}}' --compressed - Thank you, Matt ... View more