https://community.cloudera.com/t5/Support-Questions/How-to-stop-a-process-group-in-NiFi-using-curl-command/m-p/193858#M155918 <P><A rel="user" href="https://community.cloudera.com/users/83351/harishvaibhavkali.html" nodeid="83351">@Harish Vaibhav Kali</A> Perhaps not relevant but please check the spaces in your command above, specially after -d as I don't see the space there. I've personally run into problems with curl when missing spaces or due order of arguments passed. Try this</P><PRE>curl --tlsv1.2 -ik -H 'Content-Type: application/json' -H 'Authorization: Bearer {token from above command}' -d '{"id":"03bc6708-6a44-4069-8fe3-77ec056639e7","state":"STOPPED"}' -XPUT 'https://localhost:9966/nifi-api/flow/process-groups/03bc6708-6a44-4069-8fe3-77ec056639e7'</PRE><P>HTH</P> Thu, 19 Jul 2018 21:16:58 GMT falbani 2018-07-19T21:16:58Z