Cannot submit cluster entity to falcon server

I’m using the falcon cli to submit a cluster xml definition to falcon on the sandbox.

I’m running:

falcon entity -type cluster -submit -file cluster.xml


but I’m getting the stack trace:

Stacktrace:
org.apache.falcon.client.FalconCLIException: Bad Request;javax.xml.bind.UnmarshalException
 - with linked exception:
[org.xml.sax.SAXParseException; lineNumber: 3; columnNumber: 49; cvc-elt.1.a: Cannot find the declaration of element 'cluster'.]
        at org.apache.falcon.client.FalconCLIException.fromReponse(FalconCLIException.java:44)
        at org.apache.falcon.client.FalconClient.checkIfSuccessful(FalconClient.java:1172)
        at org.apache.falcon.client.FalconClient.sendEntityRequestWithObject(FalconClient.java:694)
        at org.apache.falcon.client.FalconClient.submit(FalconClient.java:323)
        at org.apache.falcon.cli.FalconCLI.entityCommand(FalconCLI.java:364)
        at org.apache.falcon.cli.FalconCLI.run(FalconCLI.java:183)
        at org.apache.falcon.cli.FalconCLI.main(FalconCLI.java:133)

The falcon logs don’t add any more information than this stack trace, except they confirm that I’m trying to create a cluster by showing me posting to /entities/submit/cluster which indicates it’s not related to this problem: http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.1.3/bk_falcon/content/ch_falcon_troubleshooting_wrong_entity.html

Any ideas how I should start troubleshooting this?

Thanks

Andrew