diff --git a/ext/custom-addons/dp_custom/models/res_partner.py b/ext/custom-addons/dp_custom/models/res_partner.py
index 0470f308..5369e544 100644
--- a/ext/custom-addons/dp_custom/models/res_partner.py
+++ b/ext/custom-addons/dp_custom/models/res_partner.py
@@ -238,7 +238,8 @@ class Partner(models.Model):
                 response = requests.post(portal_url + '/api/v1/set-discounts/?secret=' + application_id,
                                          data=json.dumps(data))
                 if response.status_code != 200:
-                    raise ValidationError(_('Rabatt konnte nicht gesetzt werden.'))
+                    raise ValidationError(_('Rabatt konnte nicht gesetzt werden. '
+                                            'Status Code: %s, Reason: %s') % (response.status_code, response.reason))
 
     @api.multi
     def write(self, vals):