{ "topic": "org.eclipse.ditto/fancy-thing/things/twin/errors", "headers": { "correlation-id": "<preserved-command-correlation-id>" }, "path": "/", "value": { "status": 400, "error": "things:feature.definition.empty", "message": "Feature Definition must not be empty!", "description": "A Feature Definition must contain at least one element. It can however also be set to null or deleted completely." }, "status": 400 }