diff --git a/sdk/costmanagement/azure-mgmt-costmanagement/azure/mgmt/costmanagement/_cost_management_client.py b/sdk/costmanagement/azure-mgmt-costmanagement/azure/mgmt/costmanagement/_cost_management_client.py
index b723c5bf5563..b3dc5950fac3 100644
--- a/sdk/costmanagement/azure-mgmt-costmanagement/azure/mgmt/costmanagement/_cost_management_client.py
+++ b/sdk/costmanagement/azure-mgmt-costmanagement/azure/mgmt/costmanagement/_cost_management_client.py
@@ -64,6 +64,7 @@ def __init__(
 
         client_models = {k: v for k, v in models.__dict__.items() if isinstance(v, type)}
         self._serialize = Serializer(client_models)
+        self._serialize.client_side_validation = False
         self._deserialize = Deserializer(client_models)
 
         self.views = ViewsOperations(
diff --git a/sdk/costmanagement/azure-mgmt-costmanagement/azure/mgmt/costmanagement/_metadata.json b/sdk/costmanagement/azure-mgmt-costmanagement/azure/mgmt/costmanagement/_metadata.json
index 4af5173a5c26..534903b76067 100644
--- a/sdk/costmanagement/azure-mgmt-costmanagement/azure/mgmt/costmanagement/_metadata.json
+++ b/sdk/costmanagement/azure-mgmt-costmanagement/azure/mgmt/costmanagement/_metadata.json
@@ -9,7 +9,7 @@
         "custom_base_url": null,
         "azure_arm": true,
         "has_lro_operations": false,
-        "client_side_validation": true
+        "client_side_validation": false
     },
     "global_parameters": {
         "sync": {
diff --git a/sdk/costmanagement/azure-mgmt-costmanagement/azure/mgmt/costmanagement/_version.py b/sdk/costmanagement/azure-mgmt-costmanagement/azure/mgmt/costmanagement/_version.py
index c47f66669f1b..e5754a47ce68 100644
--- a/sdk/costmanagement/azure-mgmt-costmanagement/azure/mgmt/costmanagement/_version.py
+++ b/sdk/costmanagement/azure-mgmt-costmanagement/azure/mgmt/costmanagement/_version.py
@@ -6,4 +6,4 @@
 # Changes may cause incorrect behavior and will be lost if the code is regenerated.
 # --------------------------------------------------------------------------
 
-VERSION = "1.0.0"
+VERSION = "1.0.0b1"
diff --git a/sdk/costmanagement/azure-mgmt-costmanagement/azure/mgmt/costmanagement/aio/_cost_management_client.py b/sdk/costmanagement/azure-mgmt-costmanagement/azure/mgmt/costmanagement/aio/_cost_management_client.py
index 06db2b2dd471..e31fb6a92def 100644
--- a/sdk/costmanagement/azure-mgmt-costmanagement/azure/mgmt/costmanagement/aio/_cost_management_client.py
+++ b/sdk/costmanagement/azure-mgmt-costmanagement/azure/mgmt/costmanagement/aio/_cost_management_client.py
@@ -61,6 +61,7 @@ def __init__(
 
         client_models = {k: v for k, v in models.__dict__.items() if isinstance(v, type)}
         self._serialize = Serializer(client_models)
+        self._serialize.client_side_validation = False
         self._deserialize = Deserializer(client_models)
 
         self.views = ViewsOperations(