diff --git a/app.py b/app.py
index 10d902a..da5192b 100644
--- a/app.py
+++ b/app.py
@@ -731,7 +731,7 @@ async def new_batch_import():
             
         container_name = data["container_name"]
         user_id = container_name
-        folder_name = data.get("folder_name")
+        folder_name = data["folder_name"]
         if folder_name == "" :
             folder_name = None
         nb_pictures = data["nb_pictures"]
@@ -772,13 +772,12 @@ async def upload_picture():
         container_name = data["container_name"]
         user_id = container_name
         seed_name = data["seed_name"]
-        seed_id = data.get("seed_id")
         zoom_level = data["zoom_level"]
         nb_seeds = data["nb_seeds"]
         image_base64 = data["image"]
         picture_set_id = data["session_id"]
         
-        if not (container_name and (seed_name or seed_id) and image_base64 and picture_set_id):
+        if not (container_name and seed_name and image_base64 and picture_set_id):
             raise BatchImportError(
                 "wrong request arguments: either seed_name, session_id, container_name or image is wrong")
             
@@ -789,11 +788,11 @@ async def upload_picture():
         _, encoded_data = image_base64.split(",", 1)
         
         image_bytes = base64.b64decode(encoded_data)
-        
+        image_hash_value = await azure_storage.generate_hash(image_bytes)
         
         connection = datastore.get_connection()
         cursor = datastore.get_cursor(connection)
-        response = await datastore.upload_pictures(cursor, user_id, picture_set_id, container_client, [image_bytes], seed_name, seed_id, zoom_level, nb_seeds)
+        response = await datastore.upload_pictures(cursor, user_id, picture_set_id, container_client, [image_hash_value], seed_name, zoom_level, nb_seeds)
         datastore.end_query(connection, cursor)
         
         if response:
diff --git a/requirements.txt b/requirements.txt
index 71a29f8..1291083 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,4 +10,4 @@ cryptography
 pyyaml
 pydantic
 python-magic
-nachet-datastore @git+https://github.com/ai-cfia/ailab-datastore.git@bd098c342b45e1cf710cc7ab807182d510ed5553
+nachet-datastore @git+https://github.com/ai-cfia/ailab-datastore.git@main
diff --git a/storage/datastore_storage_api.py b/storage/datastore_storage_api.py
index 9955efc..cb7dcc3 100644
--- a/storage/datastore_storage_api.py
+++ b/storage/datastore_storage_api.py
@@ -103,9 +103,9 @@ async def get_picture_id(cursor, user_id, image, container_client) :
     picture_id = await nachet_datastore.upload_picture_unknown(cursor, str(user_id), image, container_client)
     return picture_id
 
-def upload_pictures(cursor, user_id, picture_set_id, container_client, pictures, seed_name, seed_id: str, zoom_level: float = None, nb_seeds: int = None) :
+def upload_pictures(cursor, user_id, picture_set_id, container_client, pictures, seed_name: str, zoom_level: float = None, nb_seeds: int = None) :
     try :
-        return nachet_datastore.upload_pictures(cursor, user_id, picture_set_id, container_client, pictures, seed_name, seed_id, zoom_level, nb_seeds)
+        return nachet_datastore.upload_pictures(cursor, user_id, picture_set_id, container_client, pictures, seed_name, zoom_level, nb_seeds)
     except Exception as error:
         raise DatastoreError(error)
     
diff --git a/tests/test_image_batch_import.py b/tests/test_image_batch_import.py
index b88ef4d..26f9ea7 100644
--- a/tests/test_image_batch_import.py
+++ b/tests/test_image_batch_import.py
@@ -164,7 +164,6 @@ def setUp(self):
         self.session_id = result_json.get("session_id")
         
         self.seed_name = "Ambrosia artemisiifolia"
-        self.seed_id = "14e96554-aadf-42e4-8665-d141354800d1"
         self.zoom_level = None
         self.nb_seeds = None
         current_dir = os.path.dirname(__file__)
@@ -205,7 +204,6 @@ def test_upload_picture_successfull(self):
                     "container_name": self.container_name,
                     "session_id": self.session_id,
                     "seed_name": self.seed_name,
-                    "seed_id" : self.seed_id,
                     "zoom_level": self.zoom_level,
                     "nb_seeds": self.nb_seeds,
                     "image": self.image
@@ -232,7 +230,6 @@ def test_upload_picture_missing_arguments_error(self):
                     "container_name": self.container_name,
                     # missing session_id
                     "seed_name": self.seed_name,
-                    "seed_id" : self.seed_id,
                     "zoom_level": self.zoom_level,
                     "nb_seeds": self.nb_seeds,
                     "image": self.image 
@@ -260,7 +257,6 @@ def test_upload_picture_wrong_arguments_error(self):
                     "container_name": "", # wrong container_name
                     "session_id": self.session_id,
                     "seed_name": self.seed_name,
-                    "seed_id" : self.seed_id,
                     "zoom_level": self.zoom_level,
                     "nb_seeds": self.nb_seeds,
                     "image": self.image