diff --git a/recup_donnees_OSM_Overpass.py b/recup_donnees_OSM_Overpass.py
index fc2bc3f..afbb958 100644
--- a/recup_donnees_OSM_Overpass.py
+++ b/recup_donnees_OSM_Overpass.py
@@ -21,6 +21,7 @@ import time
 from pyexcel_ods3 import save_data
 from collections import OrderedDict
 import os
+from osm_vc63 import errors
 
 overpass_url="http://overpass-api.de/api/interpreter"
 geo_api_url = "https://api-adresse.data.gouv.fr"
@@ -279,29 +280,12 @@ trad_bicycle_parking = {
 
 # ----------------------------------------------
 
-class Api_error(Exception) :
-    def __init__(self, http_code, message="erreur appel API"):
-        self.http_code = http_code
-        self.message = message
-        super().__init__(self.message)
-    
-    def __str__(self):
-        return f'{self.http_code} -> {self.message}'
-    
-class Overpass_error(Api_error) :
-    pass
-    
-class Geo_api_error(Api_error) :
-    pass
-
-# ----------------------------------------------
-
 def run_overpass_query(query) :
 
     response = requests.get(overpass_url, params={'data': query})
 
     if (response.status_code != 200) :
-        raise Overpass_error(response.status_code)
+        raise errors.Overpass_error(response.status_code)
 
     return (response.json())
 
@@ -313,7 +297,7 @@ def run_reverse_geocoding(lat, lon) :
     response = requests.get(url, params={'lon' : str(lon), 'lat' : str(lat)})
     
     if (response.status_code != 200) :
-        raise Geo_api_error(response.status_code)
+        raise errors.Geo_api_error(response.status_code)
 
     return (response.json())
 
@@ -495,7 +479,7 @@ for nom_requete in requetes_overpass.keys() :
 
             break
 
-        except Api_error :
+        except errors.Api_error :
         
             if (nb_essai == max_retry) :
                 print ("trop d'erreurs d'API - abandon")