NEW groovy.lang.MissingMethodException: No signature of method ERROR

Hello Jody, Yes I read the whole documentation. But what do you mean? The Parse method you need in the Device Type Handler as far as I know. But what I’m trying to do, is to create from the Service Manager (SmartApp) a new Child Device. If you want to know more about what I try to do, read trough my other Topic: [RELEASE] Siemens SmartThermostat Cloudbased Integration