diff --git a/cloudkitty/rating/hash/controllers/mapping.py b/cloudkitty/rating/hash/controllers/mapping.py
index b98ef5b9..c1a074d1 100644
--- a/cloudkitty/rating/hash/controllers/mapping.py
+++ b/cloudkitty/rating/hash/controllers/mapping.py
@@ -158,6 +158,8 @@ class HashMapMappingsController(rating.RatingRestControllerBase):
                 group_id=mapping.group_id,
                 tenant_id=mapping.tenant_id)
             pecan.response.headers['Location'] = pecan.request.path
+        except db_api.MappingAlreadyExists as e:
+            pecan.abort(409, six.text_type(e))
         except db_api.NoSuchMapping as e:
             pecan.abort(404, six.text_type(e))
         except db_api.ClientHashMapError as e:
diff --git a/cloudkitty/rating/hash/controllers/threshold.py b/cloudkitty/rating/hash/controllers/threshold.py
index c7369923..ce53cb23 100644
--- a/cloudkitty/rating/hash/controllers/threshold.py
+++ b/cloudkitty/rating/hash/controllers/threshold.py
@@ -158,6 +158,8 @@ class HashMapThresholdsController(rating.RatingRestControllerBase):
                 group_id=threshold.group_id,
                 tenant_id=threshold.tenant_id)
             pecan.response.headers['Location'] = pecan.request.path
+        except db_api.ThresholdAlreadyExists as e:
+            pecan.abort(409, six.text_type(e))
         except db_api.NoSuchThreshold as e:
             pecan.abort(404, six.text_type(e))
         except db_api.ClientHashMapError as e:
diff --git a/cloudkitty/rating/hash/db/sqlalchemy/api.py b/cloudkitty/rating/hash/db/sqlalchemy/api.py
index ee24ce69..a0ed0a8c 100644
--- a/cloudkitty/rating/hash/db/sqlalchemy/api.py
+++ b/cloudkitty/rating/hash/db/sqlalchemy/api.py
@@ -432,6 +432,14 @@ class HashMap(api.HashMap):
                 else:
                     raise api.ClientHashMapError('No attribute to update.')
                 return mapping_db
+        except exception.DBDuplicateEntry:
+            puuid = uuid
+            ptype = 'Mapping_id'
+            raise api.MappingAlreadyExists(
+                value,
+                puuid,
+                ptype,
+                tenant_id=kwargs.get('tenant_id'))
         except sqlalchemy.orm.exc.NoResultFound:
             raise api.NoSuchMapping(uuid)
 
@@ -465,6 +473,14 @@ class HashMap(api.HashMap):
                 else:
                     raise api.ClientHashMapError('No attribute to update.')
                 return threshold_db
+        except exception.DBDuplicateEntry:
+            puuid = uuid
+            ptype = 'Threshold_id'
+            raise api.ThresholdAlreadyExists(
+                value,
+                puuid,
+                ptype,
+                tenant_id=kwargs.get('tenant_id'))
         except sqlalchemy.orm.exc.NoResultFound:
             raise api.NoSuchThreshold(uuid)