Connecting Vorwerk Kobold VR200 to openHAB2

its working but do you have errors in your log when you call the sitemap? It is the same if i use Group or Text:

23:10:10.374 [ERROR] [.ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item for widget org.openhab.core.model.sitemap.sitemap.Group
23:10:10.380 [ERROR] [.ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'gVorwerkDobby' for widget org.openhab.core.model.sitemap.sitemap.Group
23:10:10.386 [ERROR] [.ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'gVorwerkDobby' for widget org.openhab.core.model.sitemap.sitemap.Group
23:10:10.391 [ERROR] [.ui.internal.items.ItemUIRegistryImpl] - Cannot retrieve item 'gVorwerkDobby' for widget org.openhab.core.model.sitemap.sitemap.Group

Sitemap:

 Group item=gVorwerkDobby label="Dobby" icon="dobby"{
      Text item=VorwerkVR200_BatteryLevel_Dobby label="Ladezustand [%.0f %%]" icon="battery"
      Text item=VorwerkVR200_CurrentAction_Dobby label="Aktion [%s]" icon="motion"
      Text item=VorwerkVR200_CurrentState_Dobby label="Status [%s]"
      Text item=VorwerkVR200_Error_Dobby label="Fehler und Zustand [%s]" icon="error"
      Text item=VorwerkVR200_IsScheduledEnabled_Dobby label="Zeitplan aktiv?" icon="error"
      //Text item=VorwerkVR200_Firmware_Dobby label="Firmware [%s]" icon="text" 
      Text item=VorwerkVR200_DockHasBeenSeen_Dobby label="Position der Basis ist bekannt [%s]" icon="house" 
      Text item=VorwerkVR200_IsDocked_Dobby  label="In Basis [%s]" icon="house" 
      Switch item=VorwerkVR200_SendCommand_Dobby label="Befehle [%s]" icon="network" mappings=[clean="Reinigung", pause="Pausieren", stop="Stopp", resume="Fortfahren", dock="Andocken" ]
      Text item=VorwerkVR200_CleaningMode_Dobby label="Intensität [%s]" icon="error"
      Text item=VorwerkVR200_CleaningCategory_Dobby label="Modus [%s]" icon="error"  
}