The variant update endpoint returns a 200 with the updated content, but the docs says it should return a 204 with no Content i've create a JIRA for it, https://issues.jboss.org/browse/AGPUSH-1635 I think PUT's are suppose to be 204's, but there might be things relying on the fact that the update returns data, here is a link to the AndroidVariants update endpoint, https://github.com/aerogear/aerogear-unifiedpush-server/blob/master/jaxrs...