diff --git a/src/application/domain/exceptions/__init__.py b/src/application/domain/exceptions/__init__.py
index 6d6ca18..c773402 100644
--- a/src/application/domain/exceptions/__init__.py
+++ b/src/application/domain/exceptions/__init__.py
@@ -1 +1,21 @@
-from src.application.domain.exceptions.application_exceptions import ApplicationException
\ No newline at end of file
+from src.application.domain.exceptions.application_exception import ApplicationException
+from src.application.domain.exceptions.bad_gateway_exception import BadGatewayException
+from src.application.domain.exceptions.bad_request_exception import BadRequestException
+from src.application.domain.exceptions.conflict_exception import ConflictException
+from src.application.domain.exceptions.forbidden_exception import ForbiddenException
+from src.application.domain.exceptions.internal_server_exception import InternalServerException
+from src.application.domain.exceptions.not_found_exception import NotFoundException
+from src.application.domain.exceptions.service_unavailable_exception import ServiceUnavailableException
+from src.application.domain.exceptions.unauthorized_exception import UnauthorizedException
+
+__all__ = [
+    'ApplicationException',
+    'BadGatewayException',
+    'BadRequestException',
+    'ConflictException',
+    'ForbiddenException',
+    'InternalServerException',
+    'NotFoundException',
+    'ServiceUnavailableException',
+    'UnauthorizedException',
+]
\ No newline at end of file
diff --git a/src/application/domain/exceptions/application_exceptions.py b/src/application/domain/exceptions/application_exception.py
similarity index 88%
rename from src/application/domain/exceptions/application_exceptions.py
rename to src/application/domain/exceptions/application_exception.py
index 7396ceb..f896ae7 100644
--- a/src/application/domain/exceptions/application_exceptions.py
+++ b/src/application/domain/exceptions/application_exception.py
@@ -7,12 +7,13 @@ class ApplicationException(Exception):
         self,
         status_code: int,
         message: str,
-        headers: Mapping[str, str] | None = None,
+        headers: Mapping[str,str] | None = None,
     ):
         super().__init__(message)
         self.status_code = status_code
         self.message = message
         self.headers = headers
 
+
     def __str__(self):
         return f'{self.status_code}: {self.message}'
diff --git a/src/application/domain/exceptions/bad_gateway_exception.py b/src/application/domain/exceptions/bad_gateway_exception.py
new file mode 100644
index 0000000..93fead3
--- /dev/null
+++ b/src/application/domain/exceptions/bad_gateway_exception.py
@@ -0,0 +1,12 @@
+from __future__ import annotations
+from typing import Mapping
+from src.application.domain.exceptions.application_exception import ApplicationException
+
+
+class BadGatewayException(ApplicationException):
+    def __init__(
+        self,
+        message: str = 'Bad Gateway',
+        headers: Mapping[str,str] | None = None,
+    ):
+        super().__init__(status_code=502,message=message,headers=headers)
diff --git a/src/application/domain/exceptions/bad_request_exception.py b/src/application/domain/exceptions/bad_request_exception.py
new file mode 100644
index 0000000..2b34dc6
--- /dev/null
+++ b/src/application/domain/exceptions/bad_request_exception.py
@@ -0,0 +1,12 @@
+from __future__ import annotations
+from typing import Mapping
+from src.application.domain.exceptions.application_exception import ApplicationException
+
+
+class BadRequestException(ApplicationException):
+    def __init__(
+        self,
+        message: str = 'Bad Request',
+        headers: Mapping[str,str] | None = None,
+    ):
+        super().__init__(status_code=400,message=message,headers=headers)
diff --git a/src/application/domain/exceptions/conflict_exception.py b/src/application/domain/exceptions/conflict_exception.py
new file mode 100644
index 0000000..23e9193
--- /dev/null
+++ b/src/application/domain/exceptions/conflict_exception.py
@@ -0,0 +1,12 @@
+from __future__ import annotations
+from typing import Mapping
+from src.application.domain.exceptions.application_exception import ApplicationException
+
+
+class ConflictException(ApplicationException):
+    def __init__(
+        self,
+        message: str = 'Conflict',
+        headers: Mapping[str,str] | None = None,
+    ):
+        super().__init__(status_code=409,message=message,headers=headers)
diff --git a/src/application/domain/exceptions/forbidden_exception.py b/src/application/domain/exceptions/forbidden_exception.py
new file mode 100644
index 0000000..4b65989
--- /dev/null
+++ b/src/application/domain/exceptions/forbidden_exception.py
@@ -0,0 +1,12 @@
+from __future__ import annotations
+from typing import Mapping
+from src.application.domain.exceptions.application_exception import ApplicationException
+
+
+class ForbiddenException(ApplicationException):
+    def __init__(
+        self,
+        message: str = 'Forbidden',
+        headers: Mapping[str,str] | None = None,
+    ):
+        super().__init__(status_code=403,message=message,headers=headers)
diff --git a/src/application/domain/exceptions/internal_server_exception.py b/src/application/domain/exceptions/internal_server_exception.py
new file mode 100644
index 0000000..b290b85
--- /dev/null
+++ b/src/application/domain/exceptions/internal_server_exception.py
@@ -0,0 +1,12 @@
+from __future__ import annotations
+from typing import Mapping
+from src.application.domain.exceptions.application_exception import ApplicationException
+
+
+class InternalServerException(ApplicationException):
+    def __init__(
+        self,
+        message: str = 'Internal Server Error',
+        headers: Mapping[str,str] | None = None,
+    ):
+        super().__init__(status_code=500,message=message,headers=headers)
diff --git a/src/application/domain/exceptions/not_found_exception.py b/src/application/domain/exceptions/not_found_exception.py
new file mode 100644
index 0000000..a80bedd
--- /dev/null
+++ b/src/application/domain/exceptions/not_found_exception.py
@@ -0,0 +1,12 @@
+from __future__ import annotations
+from typing import Mapping
+from src.application.domain.exceptions.application_exception import ApplicationException
+
+
+class NotFoundException(ApplicationException):
+    def __init__(
+        self,
+        message: str = 'Not Found',
+        headers: Mapping[str,str] | None = None,
+    ):
+        super().__init__(status_code=404,message=message,headers=headers)
diff --git a/src/application/domain/exceptions/service_unavailable_exception.py b/src/application/domain/exceptions/service_unavailable_exception.py
new file mode 100644
index 0000000..dbd4f41
--- /dev/null
+++ b/src/application/domain/exceptions/service_unavailable_exception.py
@@ -0,0 +1,12 @@
+from __future__ import annotations
+from typing import Mapping
+from src.application.domain.exceptions.application_exception import ApplicationException
+
+
+class ServiceUnavailableException(ApplicationException):
+    def __init__(
+        self,
+        message: str = 'Service Unavailable',
+        headers: Mapping[str,str] | None = None,
+    ):
+        super().__init__(status_code=503,message=message,headers=headers)
diff --git a/src/application/domain/exceptions/unauthorized_exception.py b/src/application/domain/exceptions/unauthorized_exception.py
new file mode 100644
index 0000000..dd9e6b0
--- /dev/null
+++ b/src/application/domain/exceptions/unauthorized_exception.py
@@ -0,0 +1,12 @@
+from __future__ import annotations
+from typing import Mapping
+from src.application.domain.exceptions.application_exception import ApplicationException
+
+
+class UnauthorizedException(ApplicationException):
+    def __init__(
+        self,
+        message: str = 'Unauthorized',
+        headers: Mapping[str,str] | None = None,
+    ):
+        super().__init__(status_code=401,message=message,headers=headers)
diff --git a/src/main.py b/src/main.py
index 3bbb294..76c8e49 100644
--- a/src/main.py
+++ b/src/main.py
@@ -2,18 +2,18 @@ from __future__ import annotations
 from contextlib import asynccontextmanager
 import secrets
 from typing import AsyncGenerator
-from fastapi import Depends, FastAPI, status
+from fastapi import Depends, FastAPI
 from fastapi.openapi.docs import get_redoc_html, get_swagger_ui_html
 from fastapi.responses import HTMLResponse
 from fastapi.security import HTTPBasic, HTTPBasicCredentials
-from src.application.domain.exceptions import ApplicationException
+from src.application.domain.exceptions import ApplicationException,UnauthorizedException
 from src.infrastructure.cache import create_redis_client
 from src.infrastructure.config.settings import get_settings
 from src.infrastructure.vault import JwtKeyStore, start_jwt_keys_scheduler
 from src.infrastructure.utils import generate_instance_id
 from src.infrastructure.logger import logger
 from src.infrastructure.config import settings
-from src.presentation.handlers import application_exception_handler, unhandled_exception_handler
+from src.presentation.handler import application_exception_handler, unhandled_exception_handler
 from src.presentation.messaging import crypto_transfer_router
 from src.presentation.middleware import TraceIDMiddleware, SecurityHeadersMiddleware
 from src.presentation.routing import order_router
@@ -25,8 +25,7 @@ async def verify_credentials(credentials: HTTPBasicCredentials = Depends(securit
     user_ok = secrets.compare_digest(credentials.username, settings.DOCS_USERNAME)
     pass_ok = secrets.compare_digest(credentials.password, settings.DOCS_PASSWORD)
     if not (user_ok and pass_ok):
-        raise ApplicationException(
-            status_code=status.HTTP_401_UNAUTHORIZED,
+        raise UnauthorizedException(
             message='Unauthorized',
             headers={'WWW-Authenticate': 'Basic'},
         )
diff --git a/src/presentation/handler/__init__.py b/src/presentation/handler/__init__.py
new file mode 100644
index 0000000..10924fe
--- /dev/null
+++ b/src/presentation/handler/__init__.py
@@ -0,0 +1,7 @@
+from src.presentation.handler.application_exception_handler import application_exception_handler
+from src.presentation.handler.unhandled_exception_handler import unhandled_exception_handler
+
+__all__ = [
+    'application_exception_handler',
+    'unhandled_exception_handler',
+]
diff --git a/src/presentation/handlers/application_handler.py b/src/presentation/handler/application_exception_handler.py
similarity index 79%
rename from src/presentation/handlers/application_handler.py
rename to src/presentation/handler/application_exception_handler.py
index 2835ac5..b1bb593 100644
--- a/src/presentation/handlers/application_handler.py
+++ b/src/presentation/handler/application_exception_handler.py
@@ -1,17 +1,15 @@
-from fastapi.responses import ORJSONResponse
 from fastapi import Request
+from fastapi.responses import ORJSONResponse
 from src.application.domain.exceptions import ApplicationException
 
 
 async def application_exception_handler(_request: Request, exc: ApplicationException) -> ORJSONResponse:
     detail = exc.message
     if 500 <= exc.status_code:
-        detail = "Internal Server Error"
+        detail = 'Internal Server Error'
 
     return ORJSONResponse(
         status_code=exc.status_code,
-        content={'detail': detail, 'status_code': exc.status_code},
+        content={'detail': detail,'status_code': exc.status_code},
         headers=dict(exc.headers) if exc.headers else None,
     )
-
-
diff --git a/src/presentation/handlers/unhandled_handler.py b/src/presentation/handler/unhandled_exception_handler.py
similarity index 77%
rename from src/presentation/handlers/unhandled_handler.py
rename to src/presentation/handler/unhandled_exception_handler.py
index c6f1d52..e456f44 100644
--- a/src/presentation/handlers/unhandled_handler.py
+++ b/src/presentation/handler/unhandled_exception_handler.py
@@ -1,5 +1,5 @@
-from fastapi.responses import ORJSONResponse
 from fastapi import Request
+from fastapi.responses import ORJSONResponse
 from starlette import status
 from src.infrastructure.logger import logger
 
@@ -8,5 +8,5 @@ async def unhandled_exception_handler(_request: Request, exc: Exception) -> ORJS
     logger.exception(f'Unhandled exception: {type(exc).__name__}')
     return ORJSONResponse(
         status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
-        content={'detail': 'Internal Server Error'},
-    )
\ No newline at end of file
+        content={'detail': 'Internal Server Error','status_code': status.HTTP_500_INTERNAL_SERVER_ERROR},
+    )
diff --git a/src/presentation/handlers/__init__.py b/src/presentation/handlers/__init__.py
deleted file mode 100644
index cb6cbad..0000000
--- a/src/presentation/handlers/__init__.py
+++ /dev/null
@@ -1,2 +0,0 @@
-from src.presentation.handlers.unhandled_handler import unhandled_exception_handler
-from src.presentation.handlers.application_handler import application_exception_handler
\ No newline at end of file
diff --git a/src/presentation/routing/order.py b/src/presentation/routing/order.py
index c30320b..012f528 100644
--- a/src/presentation/routing/order.py
+++ b/src/presentation/routing/order.py
@@ -1,6 +1,6 @@
 from urllib.parse import parse_qs
 import orjson
-from fastapi import APIRouter, Depends, Request
+from fastapi import APIRouter, Depends, Request, Response
 from fastapi.responses import ORJSONResponse
 from src.application.commands import CreateOrderCommand
 from src.application.commands import CreatePaymentCloudkassirCommand
@@ -10,20 +10,26 @@ from src.application.domain.enums import OrderStatus
 from src.presentation.decorators import require_access_token, csrf_protect
 from src.presentation.dependencies.commands import get_create_order_command, get_create_payment_cloudkassir_command
 from src.presentation.dependencies.logger import get_logger
-from src.presentation.schemas.order import CreateOrder
+from src.presentation.schemas.order import CreateOrder,CreateOrderResponse,OrderPaymentResponse
 from src.presentation.schemas.itpay_payment_models import ItpayPaymentData
 
 order_router = APIRouter(prefix='/order', tags=['orders'])
 
 
-@order_router.post('/create')
+@order_router.post(
+        '/create',
+        response_model=CreateOrderResponse,
+        status_code=201,
+        responses={409: {'model': CreateOrderResponse}},
+)
 #@csrf_protect()
 async def create_order(
         payment_data: CreateOrder,
+        response: Response,
         #auth: AuthContext = Depends(require_access_token),
         command: CreateOrderCommand = Depends(get_create_order_command),
         logger: ILogger = Depends(get_logger),
-) -> ORJSONResponse:
+) -> CreateOrderResponse:
     #o = await command(payment_data, auth.user_id)
     o = await command(payment_data, '01KPKAFN6J1NJBY15DX8JE2QYB')
     itpay_error = o.status in (
@@ -32,32 +38,33 @@ async def create_order(
         OrderStatus.ERROR,
     )
     http_code = 409 if itpay_error else 201
-    content: dict = {
-        'status_code': http_code,
-        'order': {
-            'id': o.id,
-            'created_at': o.created_at.isoformat() if o.created_at is not None else None,
-            'updated_at': o.updated_at.isoformat() if o.updated_at is not None else None,
-            'user_id': o.user_id,
-            'usdt_amount': str(o.usdt_amount) if o.usdt_amount is not None else None,
-            'usdt_exchange_rate': str(o.usdt_exchange_rate) if o.usdt_exchange_rate is not None else None,
-            'gas_fee': str(o.gas_fee) if o.gas_fee is not None else None,
-            'total_price': str(o.total_price) if o.total_price is not None else None,
-            'service_fee': str(o.service_fee) if o.service_fee is not None else None,
-            'status': o.status.value if o.status is not None else None,
-            'client_payment_id': o.client_payment_id,
-            'itpay_payment_qr_url_desktop': o.itpay_payment_qr_url_desktop,
-            'itpay_payment_qr_url_android': o.itpay_payment_qr_url_android,
-            'itpay_payment_qr_url_ios': o.itpay_payment_qr_url_ios,
-            'itpay_payment_qr_image_desktop': o.itpay_payment_qr_image_desktop,
-            'itpay_payment_qr_image_android': o.itpay_payment_qr_image_android,
-            'itpay_payment_qr_image_ios': o.itpay_payment_qr_image_ios,
-            'itpay_id': o.itpay_id,
-            'itpay_qr_id': o.itpay_qr_id,
-            'itpay_amount': str(o.itpay_amount) if o.itpay_amount is not None else None,
-            'itpay_created_at': o.itpay_created_at.isoformat() if o.itpay_created_at is not None else None,
-        }
-    }
+    response.status_code = http_code
+    content = CreateOrderResponse(
+        status_code=http_code,
+        order=OrderPaymentResponse(
+            id=o.id,
+            created_at=o.created_at.isoformat() if o.created_at is not None else None,
+            updated_at=o.updated_at.isoformat() if o.updated_at is not None else None,
+            user_id=o.user_id,
+            usdt_amount=str(o.usdt_amount) if o.usdt_amount is not None else None,
+            usdt_exchange_rate=str(o.usdt_exchange_rate) if o.usdt_exchange_rate is not None else None,
+            gas_fee=str(o.gas_fee) if o.gas_fee is not None else None,
+            total_price=str(o.total_price) if o.total_price is not None else None,
+            service_fee=str(o.service_fee) if o.service_fee is not None else None,
+            status=o.status,
+            client_payment_id=o.client_payment_id,
+            itpay_payment_qr_url_desktop=o.itpay_payment_qr_url_desktop,
+            itpay_payment_qr_url_android=o.itpay_payment_qr_url_android,
+            itpay_payment_qr_url_ios=o.itpay_payment_qr_url_ios,
+            itpay_payment_qr_image_desktop=o.itpay_payment_qr_image_desktop,
+            itpay_payment_qr_image_android=o.itpay_payment_qr_image_android,
+            itpay_payment_qr_image_ios=o.itpay_payment_qr_image_ios,
+            itpay_id=o.itpay_id,
+            itpay_qr_id=o.itpay_qr_id,
+            itpay_amount=str(o.itpay_amount) if o.itpay_amount is not None else None,
+            itpay_created_at=o.itpay_created_at.isoformat() if o.itpay_created_at is not None else None,
+        ),
+    )
     log_ids = {
         'event': 'order_create_itpay_failed' if itpay_error else 'order_created',
         'order_id': o.id,
@@ -67,7 +74,7 @@ async def create_order(
         'order_status': o.status.value if o.status is not None else None,
     }
     logger.info(log_ids)
-    return ORJSONResponse(content=content, status_code=http_code)
+    return content
 
 
 @order_router.post('/webhook/itpay')
diff --git a/src/presentation/schemas/order.py b/src/presentation/schemas/order.py
index 26e0e3c..f5406e4 100644
--- a/src/presentation/schemas/order.py
+++ b/src/presentation/schemas/order.py
@@ -1,5 +1,6 @@
 from decimal import Decimal
 from pydantic import BaseModel,Field
+from src.application.domain.enums import OrderStatus
 
 
 class CreateOrder(BaseModel):
@@ -8,3 +9,32 @@ class CreateOrder(BaseModel):
     gas_fee: Decimal = Field(gt=0, decimal_places=2, max_digits=20)
     total_price: Decimal = Field(gt=0, decimal_places=2, max_digits=20)
 
+
+class OrderPaymentResponse(BaseModel):
+    id: str | None = None
+    created_at: str | None = None
+    updated_at: str | None = None
+    user_id: str | None = None
+    usdt_amount: str | None = None
+    usdt_exchange_rate: str | None = None
+    gas_fee: str | None = None
+    total_price: str | None = None
+    service_fee: str | None = None
+    status: OrderStatus | None = None
+    client_payment_id: str | None = None
+    itpay_payment_qr_url_desktop: str | None = None
+    itpay_payment_qr_url_android: str | None = None
+    itpay_payment_qr_url_ios: str | None = None
+    itpay_payment_qr_image_desktop: str | None = None
+    itpay_payment_qr_image_android: str | None = None
+    itpay_payment_qr_image_ios: str | None = None
+    itpay_id: str | None = None
+    itpay_qr_id: str | None = None
+    itpay_amount: str | None = None
+    itpay_created_at: str | None = None
+
+
+class CreateOrderResponse(BaseModel):
+    status_code: int
+    order: OrderPaymentResponse
+