Hi Vaishakkb.   Thank you again for your response.    Unfortunately I am unable to make it work. Looking at the docs (https://archive.cloudera.com/cm6/6.3.0/generic/jar/cm_api/apidocs/resource_RoleConfigGroupsResource.html#resource_RoleConfigGroupsResource_ClustersResourceV33_ServicesResourceV33_RoleConfigGroupsResource_updateConfig_PUT) for that endpoint, it seems to want an ApiConfigList rather than an ApiRoleList. If I try to use an ApiRoleList object I get "message" : "Unrecognized property: for anything I put in it after "items".   Cheers   --  Pete   ... View more