diff --git a/pyproject.toml b/pyproject.toml
index 188ec28..1567655 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,7 +5,7 @@ build-backend = "poetry.core.masonry.api"
 
 [tool.poetry]
 name = "x10-python-trading-starknet"
-version = "0.0.15"
+version = "0.0.16"
 description = "Python client for X10 API"
 authors = ["X10 <tech@ex10.org>"]
 repository = "https://github.com/x10xchange/python_sdk"
diff --git a/x10/perpetual/order_object.py b/x10/perpetual/order_object.py
index 33f466b..7ab7207 100644
--- a/x10/perpetual/order_object.py
+++ b/x10/perpetual/order_object.py
@@ -14,12 +14,12 @@
 )
 from x10.perpetual.orders import (
     CreateOrderTpslTriggerModel,
+    NewOrderModel,
     OrderPriceType,
     OrderSide,
     OrderTpslType,
     OrderTriggerPriceType,
     OrderType,
-    PerpetualOrderModel,
     SelfTradeProtectionLevel,
     TimeInForce,
 )
@@ -55,7 +55,7 @@ def create_order_object(
     tp_sl_type: Optional[OrderTpslType] = None,
     take_profit: Optional[OrderTpslTriggerParam] = None,
     stop_loss: Optional[OrderTpslTriggerParam] = None,
-) -> PerpetualOrderModel:
+) -> NewOrderModel:
     """
     Creates an order object to be placed on the exchange using the `place_order` method.
     """
@@ -132,7 +132,16 @@ def __create_order_object(
     tp_sl_type: Optional[OrderTpslType] = None,
     take_profit: Optional[OrderTpslTriggerParam] = None,
     stop_loss: Optional[OrderTpslTriggerParam] = None,
-) -> PerpetualOrderModel:
+) -> NewOrderModel:
+    if side not in OrderSide:
+        raise ValueError(f"Unexpected order side value: {side}")
+
+    if time_in_force not in TimeInForce or time_in_force == TimeInForce.FOK:
+        raise ValueError(f"Unexpected time in force value: {time_in_force}")
+
+    if expire_time is None:
+        raise ValueError("`expire_time` must be provided")
+
     if exact_only:
         raise NotImplementedError("`exact_only` option is not supported yet")
 
@@ -144,9 +153,6 @@ def __create_order_object(
     ):
         raise NotImplementedError("TPSL `MARKET` price type is not supported yet")
 
-    if expire_time is None:
-        raise ValueError("`expire_time` must be provided")
-
     if nonce is None:
         nonce = generate_nonce()
 
@@ -194,7 +200,7 @@ def __create_order_object(
     )
 
     order_id = str(settlement_data.order_hash) if order_external_id is None else order_external_id
-    order = PerpetualOrderModel(
+    order = NewOrderModel(
         id=order_id,
         market=market.name,
         type=OrderType.LIMIT,
diff --git a/x10/perpetual/orders.py b/x10/perpetual/orders.py
index eec6389..146b253 100644
--- a/x10/perpetual/orders.py
+++ b/x10/perpetual/orders.py
@@ -131,7 +131,7 @@ class CreateOrderTpslTriggerModel(X10BaseModel):
     debugging_amounts: Optional[StarkDebuggingOrderAmountsModel] = None
 
 
-class PerpetualOrderModel(X10BaseModel):
+class NewOrderModel(X10BaseModel):
     id: str
     market: str
     type: OrderType
@@ -188,6 +188,7 @@ class OpenOrderModel(X10BaseModel):
     created_time: int
     updated_time: int
     expiry_time: Optional[int] = None
+    time_in_force: TimeInForce
     tp_sl_type: Optional[OrderTpslType] = None
     take_profit: Optional[OpenOrderTpslTriggerModel] = None
     stop_loss: Optional[OpenOrderTpslTriggerModel] = None
diff --git a/x10/perpetual/simple_client/simple_trading_client.py b/x10/perpetual/simple_client/simple_trading_client.py
index 12bbf36..a8600c4 100644
--- a/x10/perpetual/simple_client/simple_trading_client.py
+++ b/x10/perpetual/simple_client/simple_trading_client.py
@@ -9,10 +9,10 @@
 from x10.perpetual.markets import MarketModel
 from x10.perpetual.order_object import create_order_object
 from x10.perpetual.orders import (
+    NewOrderModel,
     OpenOrderModel,
     OrderSide,
     OrderStatus,
-    PerpetualOrderModel,
     TimeInForce,
 )
 from x10.perpetual.stream_client.perpetual_stream_connection import (
@@ -208,7 +208,7 @@ async def create_and_place_order(
         if not market:
             raise ValueError(f"Market '{market_name}' not found.")
 
-        order: PerpetualOrderModel = create_order_object(
+        order: NewOrderModel = create_order_object(
             account=self.__account,
             market=market,
             amount_of_synthetic=amount_of_synthetic,
diff --git a/x10/perpetual/trading_client/order_management_module.py b/x10/perpetual/trading_client/order_management_module.py
index 7143466..4924312 100644
--- a/x10/perpetual/trading_client/order_management_module.py
+++ b/x10/perpetual/trading_client/order_management_module.py
@@ -1,6 +1,6 @@
 from typing import List, Optional
 
-from x10.perpetual.orders import PerpetualOrderModel, PlacedOrderModel
+from x10.perpetual.orders import NewOrderModel, PlacedOrderModel
 from x10.perpetual.trading_client.base_module import BaseModule
 from x10.utils.http import send_delete_request, send_post_request
 from x10.utils.log import get_logger
@@ -17,7 +17,7 @@ class _MassCancelRequestModel(X10BaseModel):
 
 
 class OrderManagementModule(BaseModule):
-    async def place_order(self, order: PerpetualOrderModel):
+    async def place_order(self, order: NewOrderModel):
         """
         Placed new order on the exchange.