diff --git a/lib/plant.py b/lib/plant.py
index 2ceed61..8627761 100644
--- a/lib/plant.py
+++ b/lib/plant.py
@@ -591,7 +591,7 @@ class Anlage():
         for dname, listofsensors in d2sensors.items():
             self.map_distributor_to_sensors(dname, listofsensors)
 
-    def create_cable_path(self, G, sname, dname):
+    def create_cable_path(self, G, sname, dname) -> tuple:
         quelle = self._nodeids.get_id(self.get_distributor_point(dname))
         ziel = self._nodeids.get_id(self.get_sensor_point(sname))
         pfad_nodes = nx.shortest_path(G, source=quelle, target=ziel, weight='weight')
@@ -599,7 +599,7 @@ class Anlage():
 
         return pfad_nodes, pfad_length
     
-    def create_cable_paths(self, G):
+    def create_cable_paths(self, G) -> dict:
         pfade = dict()
         pfade["kabel"] = list()
         for sname, dname in self._sensor2dist.items():
diff --git a/lib/routing.py b/lib/routing.py
index 3876058..59a4836 100644
--- a/lib/routing.py
+++ b/lib/routing.py
@@ -27,7 +27,7 @@ def to_json(d, pretty: bool = True) -> str:
     return json.dumps(d, indent=2 if pretty else None, ensure_ascii=False, default=str) #ensure_ascii false für darstellung von "ue"
 
 
-def create_plant(racks:dict, sensors:dict, distributors:dict, mapping:dict):
+def create_plant(racks:dict, sensors:dict, distributors:dict, mapping:dict) -> dict:
 
     # racks = {'Rack_1-0': [Point(0, 0), Point(0, 10)], 
     #          'Rack_2-0': [Point(10, -2), Point(10, 5)], 
@@ -60,11 +60,11 @@ def create_plant(racks:dict, sensors:dict, distributors:dict, mapping:dict):
     # Füge Sensoren als Knoten hinzu
     an.add_sensors(sensors)
     # Verbinde Sensoren mit deren naheliegendsten Racks
-    an.connect_sensors_to_racks()
+    errors_sensors = an.connect_sensors_to_racks()
     # Füge UV hinzu
     an.add_distributors(distributors)
     # Verbinde UV mit deren naheliegendsten Racks
-    an.connect_distributor_to_racks()
+    errors_dists = an.connect_distributor_to_racks()
     # Verknüpfe Sensoren mit zugehörigem UV
     an.map_distributors_to_sensors(mapping)
     
@@ -78,6 +78,8 @@ def create_plant(racks:dict, sensors:dict, distributors:dict, mapping:dict):
     if args.graph:
         draw_graph(G,an)
 
+    paths['errors_sensors'] = errors_sensors
+    paths['errors_dists'] = errors_dists
     return paths
 
 def draw_graph(G:nx.Graph, an:Anlage):
@@ -139,9 +141,13 @@ if __name__ == "__main__":
     (racks, sensors, subdists, mapping) = prepare_data(rawdata)
     
     # virtuelle Anlage erstellen 
-    plant = create_plant(racks, sensors, subdists, mapping)
-
-    cable_paths = plant
+    cable_paths = create_plant(racks, sensors, subdists, mapping)
+    if args.console:
+        print(to_json(cable_paths))
+        print("failed sensor:")    
+        print(to_json(cable_paths['errors_sensors']))    
+        print("failed dists:")    
+        print(to_json(cable_paths['errors_dists']))    
 
     # Ausgabe schreiben
     if args.write: