diff --git a/deevirt_schema/api/datacenter.py b/deevirt_schema/api/datacenter.py
index 400a5f1..a8b32e5 100644
--- a/deevirt_schema/api/datacenter.py
+++ b/deevirt_schema/api/datacenter.py
@@ -13,7 +13,7 @@ class Datacenter(BaseModel):
     model_config = ConfigDict(from_attributes=True)
     
     company_id:UUID4
-    id:UUID4
+    id:Optional[UUID4] = Field(default_factory=uuid.uuid4)
     name:str
     cluster_id:UUID4
     storage_pool_id:Optional[UUID4]
diff --git a/deevirt_schema/api/network.py b/deevirt_schema/api/network.py
index 33209f1..48bbb1a 100644
--- a/deevirt_schema/api/network.py
+++ b/deevirt_schema/api/network.py
@@ -1,5 +1,6 @@
 from ipaddress import IPv4Address, IPv6Address
 from typing import List, Optional
+from uuid import uuid4
 from pydantic_xml import element, attr
 from pydantic import UUID4, BaseModel, ConfigDict, Field
 from pydantic_extra_types.mac_address import MacAddress
@@ -12,14 +13,19 @@ class lsp(BaseModel):
     ipv4_addr:Optional[IPv4Address] = Field(default=None)
     ipv6_addr:Optional[IPv6Address] = Field(default=None)
 
+class lspCreate(BaseModel):
+    switch_id:UUID4 = Field(default=None)
+    id:Optional[UUID4]
+    mac_addr:Optional[str] = Field()
+
 class ls(BaseModel):
     model_config = ConfigDict(from_attributes=True)
     
+    datacenter_id:Optional[UUID4] = Field(default=None)
     id:UUID4 = Field()
     name:str = Field()
     network_switch_port:Optional[List[lsp]] = Field(default=[])
 
-class lspCreate(BaseModel):
-    switch_id:UUID4 = Field(default=None)
-    id:Optional[UUID4]
-    mac_addr:Optional[str] = Field()
\ No newline at end of file
+class lsCreate(ls):
+    id:Optional[UUID4] = Field(default_factory=uuid4)
+
diff --git a/setup.py b/setup.py
index cd49f2b..5fb2a6f 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@ from setuptools import find_packages, setup
 
 setup(
     name='deevirt_schema',
-    version='0.1.30',    
+    version='0.1.31',    
     description='Deevirt Schema',
     url='https://git.celeonet.fr/Deevirt/deevirt_schema.git',
     author='Celeonet',