diff --git a/commerce_coordinator/apps/commercetools/catalog_info/edx_utils.py b/commerce_coordinator/apps/commercetools/catalog_info/edx_utils.py
index 1240ab5a..64b6acad 100644
--- a/commerce_coordinator/apps/commercetools/catalog_info/edx_utils.py
+++ b/commerce_coordinator/apps/commercetools/catalog_info/edx_utils.py
@@ -10,8 +10,6 @@
 from commercetools.platform.models import TransactionType
 
 from commerce_coordinator.apps.commercetools.catalog_info.constants import (
-    EDX_STRIPE_PAYMENT_INTERFACE_NAME,
-    EDX_PAYPAL_PAYMENT_INTERFACE_NAME,
     PAYMENT_STATUS_INTERFACE_CODE_SUCCEEDED,
     EdXFieldNames,
     TwoUKeys
@@ -49,17 +47,6 @@ def get_edx_lms_user_name(customer: CTCustomer):
     return customer.custom.fields[EdXFieldNames.LMS_USER_NAME]
 
 
-def get_edx_successful_stripe_payment(order: CTOrder) -> Union[CTPayment, None]:
-    for pr in order.payment_info.payments:
-        pmt = pr.obj
-        if pmt.payment_status.interface_code == PAYMENT_STATUS_INTERFACE_CODE_SUCCEEDED \
-            and pmt.payment_method_info.payment_interface == EDX_STRIPE_PAYMENT_INTERFACE_NAME and \
-                pmt.interface_id:
-            return pmt
-    return None
-
-
-# TODO remove get_edx_successful_stripe_payment if there is no more use.
 def get_edx_successful_payment_info(order: CTOrder):
     for pr in order.payment_info.payments:
         pmt = pr.obj
@@ -90,9 +77,7 @@ def get_edx_refund_info(payment: CTPayment) -> decimal:
     refund_amount = decimal.Decimal(0.00)
     interaction_id = None
     for transaction in payment.transactions:
-        print('\n\n\n\n\n\nget_edx_refund_amount transaction.type = ', transaction.type)
         if transaction.type == TransactionType.CHARGE:  # pragma no cover
-            print('\n\n\n\n\n\nget_edx_refund_amount transaction.amount = ', transaction.amount)
             refund_amount += decimal.Decimal(typed_money_to_string(transaction.amount, money_as_decimal_string=True))
             interaction_id = transaction.interaction_id
             return refund_amount, interaction_id
diff --git a/commerce_coordinator/apps/commercetools/pipeline.py b/commerce_coordinator/apps/commercetools/pipeline.py
index 93f5be41..70cd3a0d 100644
--- a/commerce_coordinator/apps/commercetools/pipeline.py
+++ b/commerce_coordinator/apps/commercetools/pipeline.py
@@ -13,8 +13,8 @@
 from requests import HTTPError
 
 from commerce_coordinator.apps.commercetools.catalog_info.constants import (
-    EDX_STRIPE_PAYMENT_INTERFACE_NAME,
-    EDX_PAYPAL_PAYMENT_INTERFACE_NAME
+    EDX_PAYPAL_PAYMENT_INTERFACE_NAME,
+    EDX_STRIPE_PAYMENT_INTERFACE_NAME
 )
 from commerce_coordinator.apps.commercetools.catalog_info.edx_utils import (
     get_edx_refund_info,
@@ -337,7 +337,6 @@ def run_filter(
                 payment_on_order = ct_api_client.get_payment_by_key(payment_key)
             elif psp == EDX_PAYPAL_PAYMENT_INTERFACE_NAME:
                 payment_on_order = ct_api_client.get_payment_by_key(payment_intent_id)
-                print('\n\n\n paypal payment_on_order = ', payment_on_order)
 
             updated_payment = ct_api_client.create_return_payment_transaction(
                 payment_id=payment_on_order.id,
diff --git a/commerce_coordinator/apps/commercetools/tests/test_pipeline.py b/commerce_coordinator/apps/commercetools/tests/test_pipeline.py
index 2c330604..b5a74bff 100644
--- a/commerce_coordinator/apps/commercetools/tests/test_pipeline.py
+++ b/commerce_coordinator/apps/commercetools/tests/test_pipeline.py
@@ -3,12 +3,12 @@
 from unittest import TestCase
 from unittest.mock import patch
 
-from commerce_coordinator.apps.commercetools.catalog_info.constants import EDX_STRIPE_PAYMENT_INTERFACE_NAME
 from commercetools.platform.models import ReturnInfo, ReturnPaymentState, ReturnShipmentState, TransactionType
 from django.contrib.auth import get_user_model
 from django.test import RequestFactory
 from rest_framework.test import APITestCase
 
+from commerce_coordinator.apps.commercetools.catalog_info.constants import EDX_STRIPE_PAYMENT_INTERFACE_NAME
 from commerce_coordinator.apps.commercetools.constants import COMMERCETOOLS_ORDER_MANAGEMENT_SYSTEM
 from commerce_coordinator.apps.commercetools.pipeline import (
     AnonymizeRetiredUser,
@@ -148,6 +148,7 @@ def test_commercetools_transaction_create(self, mock_returned_payment, mock_paym
             refund_response={"payment_intent": "mock_payment_intent"},
             active_order_management_system=COMMERCETOOLS_ORDER_MANAGEMENT_SYSTEM,
             has_been_refunded=False,
+            payment_intent_id="pi_4MtwBwLkdIwGlenn28a3tqPa",
             psp=EDX_STRIPE_PAYMENT_INTERFACE_NAME
         )
         mock_payment_result = ret['returned_payment']
@@ -170,6 +171,7 @@ def test_commercetools_transaction_create_no_payment_data(self, mock_returned_pa
             refund_response={"payment_intent": "mock_payment_intent"},
             active_order_management_system=COMMERCETOOLS_ORDER_MANAGEMENT_SYSTEM,
             has_been_refunded=False,
+            payment_intent_id="pi_4MtwBwLkdIwGlenn28a3tqPa",
             psp=EDX_STRIPE_PAYMENT_INTERFACE_NAME
         )
         mock_payment_result = ret['returned_payment']
@@ -188,6 +190,7 @@ def test_commercetools_transaction_create_has_refund(self, mock_logger, mock_has
             refund_response="charge_already_refunded",
             active_order_management_system=COMMERCETOOLS_ORDER_MANAGEMENT_SYSTEM,
             has_been_refunded=True,
+            payment_intent_id="pi_4MtwBwLkdIwGlenn28a3tqPa",
             psp=EDX_STRIPE_PAYMENT_INTERFACE_NAME
         )
         mock_logger.assert_called_once_with('[CreateReturnPaymentTransaction] refund has already been processed, '
diff --git a/commerce_coordinator/apps/commercetools/views.py b/commerce_coordinator/apps/commercetools/views.py
index 44999587..f159248a 100644
--- a/commerce_coordinator/apps/commercetools/views.py
+++ b/commerce_coordinator/apps/commercetools/views.py
@@ -127,8 +127,6 @@ def post(self, request):
             **request.data
         }
 
-        print('\n\n\n\n\n\nrequest.data', request.data)
-
         logger.debug(f'[CT-{tag}] Message received from commercetools with details: {input_data}')
 
         message_details = OrderReturnedViewMessageInputSerializer(data=input_data)
diff --git a/commerce_coordinator/apps/paypal/clients.py b/commerce_coordinator/apps/paypal/clients.py
index 4ab243e3..8369c5a9 100644
--- a/commerce_coordinator/apps/paypal/clients.py
+++ b/commerce_coordinator/apps/paypal/clients.py
@@ -1,12 +1,17 @@
+"""PayPal client"""
 import json
 
 from django.conf import settings
+from paypalserversdk.api_helper import ApiHelper
+from paypalserversdk.controllers.payments_controller import PaymentsController
 from paypalserversdk.http.auth.o_auth_2 import ClientCredentialsAuthCredentials
 from paypalserversdk.paypalserversdk_client import PaypalserversdkClient
-from paypalserversdk.controllers.payments_controller import PaymentsController
-from paypalserversdk.api_helper import ApiHelper
+
 
 class PayPalClient:
+    """
+    PayPal SDK client to call PayPal APIs.
+    """
     def __init__(self):
         self.paypal_client: PaypalserversdkClient = PaypalserversdkClient(
             client_credentials_auth_credentials=ClientCredentialsAuthCredentials(
@@ -17,16 +22,24 @@ def __init__(self):
 
 
     def refund_order(self, capture_id):
+        """
+        Capture PayPal refund.
+
+        Args:
+            capture_id (str): The identifier of the PayPal order to cpture refund.
+
+        Returns:
+            The response from PayPal.
+        """
+
         paypal_client = self.paypal_client
         payments_controller: PaymentsController = paypal_client.payments
 
         collect = {"capture_id": capture_id, "prefer": "return=representation"}
         refund_response = payments_controller.captures_refund(collect)
-        print('\n\n\n\n\n refund_response.body = ', refund_response.body)
+
         if refund_response.body:
             response = json.loads(ApiHelper.json_serialize(refund_response.body))
-            print('\n\n\n\n\n refund_order response serialized = ', response)
-
             return {
                 "id": response.get("id"),
                 "created": response.get("create_time"),
diff --git a/commerce_coordinator/apps/paypal/pipeline.py b/commerce_coordinator/apps/paypal/pipeline.py
index 222a1926..db74b7e9 100644
--- a/commerce_coordinator/apps/paypal/pipeline.py
+++ b/commerce_coordinator/apps/paypal/pipeline.py
@@ -6,12 +6,12 @@
 from urllib.parse import urlencode
 
 from django.conf import settings
-from commerce_coordinator.apps.paypal.clients import PayPalClient
-from commerce_coordinator.apps.core.constants import PipelineCommand
 from openedx_filters import PipelineStep
 from requests import RequestException
 
 from commerce_coordinator.apps.commercetools.catalog_info.constants import EDX_PAYPAL_PAYMENT_INTERFACE_NAME
+from commerce_coordinator.apps.core.constants import PipelineCommand
+from commerce_coordinator.apps.paypal.clients import PayPalClient
 
 logger = logging.getLogger(__name__)
 
@@ -71,7 +71,7 @@ def run_filter(
         try:
             paypal_client = PayPalClient()
             paypal_refund_response = paypal_client.refund_order(capture_id=ct_transaction_interaction_id)
-            print('\n\n\n\n\n paypal_refund_response = ', paypal_refund_response)
+
             return {
                 'refund_response': paypal_refund_response,
             }
@@ -81,6 +81,4 @@ def run_filter(
                         f'message_id: {kwargs["message_id"]} '
                         f'exception: {ex}')
 
-            raise RequestException(str(ex))
-
-
+            raise RequestException(str(ex)) from ex
diff --git a/commerce_coordinator/apps/paypal/tests/__init__.py b/commerce_coordinator/apps/paypal/tests/__init__.py
index 2e06d004..e69de29b 100644
--- a/commerce_coordinator/apps/paypal/tests/__init__.py
+++ b/commerce_coordinator/apps/paypal/tests/__init__.py
@@ -1 +0,0 @@
-"""Constants for PayPal app tests."""
diff --git a/commerce_coordinator/apps/stripe/pipeline.py b/commerce_coordinator/apps/stripe/pipeline.py
index 32ed8a1e..132c7461 100644
--- a/commerce_coordinator/apps/stripe/pipeline.py
+++ b/commerce_coordinator/apps/stripe/pipeline.py
@@ -263,9 +263,6 @@ def run_filter(
         """
 
         tag = type(self).__name__
-        print('\n\n\n\n\n\nRefundPaymentIntent psp = ', psp)
-        print('\n\n\n\n\n\nRefundPaymentIntent payment_intent_id = ', payment_intent_id)
-        print('\n\n\n\n\n\nRefundPaymentIntent amount_in_cents = ', amount_in_cents)
 
         if psp != EDX_STRIPE_PAYMENT_INTERFACE_NAME or not payment_intent_id or not amount_in_cents:  # pragma: no cover
             logger.info(f'[{tag}] payment_intent_id or amount_in_cents not set, skipping.')
diff --git a/commerce_coordinator/settings/base.py b/commerce_coordinator/settings/base.py
index 74b6095f..3d183c00 100644
--- a/commerce_coordinator/settings/base.py
+++ b/commerce_coordinator/settings/base.py
@@ -439,8 +439,8 @@ def root(*path_fragments):
         'paypal': {
             'user_activity_page_url': '',
             'paypal_webhook_id': PAYPAL_WEBHOOK_ID,
-            'client_id': 'ASoOt8z1BmLEzJGLV-N_gWP083ghlpWaj9eOj4BxQ9k8rQ-jDoSO5e_5-gRR3uzwp-hOt_YmfzKsnrFV',
-            'client_secret': 'EL_StzjNHS0lUbtVLPOUxC-fa27E4x12WIAN4XRHjYNNYM3kkUNxXoaFd_XextoDC1h3TvF9vuC74J1Z',
+            'client_id': '',
+            'client_secret': '',
         },
     },
 }
diff --git a/commerce_coordinator/settings/local.py b/commerce_coordinator/settings/local.py
index 07d10cf7..ff2d1174 100644
--- a/commerce_coordinator/settings/local.py
+++ b/commerce_coordinator/settings/local.py
@@ -147,8 +147,8 @@
         'paypal': {
             'user_activity_page_url': 'https://sandbox.paypal.com/myaccount/activities/',
             'paypal_webhook_id': 'SET-ME-PLEASE',
-            'client_id': 'ASoOt8z1BmLEzJGLV-N_gWP083ghlpWaj9eOj4BxQ9k8rQ-jDoSO5e_5-gRR3uzwp-hOt_YmfzKsnrFV',
-            'client_secret': 'EL_StzjNHS0lUbtVLPOUxC-fa27E4x12WIAN4XRHjYNNYM3kkUNxXoaFd_XextoDC1h3TvF9vuC74J1Z',
+            'client_id': '',
+            'client_secret': '',
         },
     },
 }
diff --git a/commerce_coordinator/settings/test.py b/commerce_coordinator/settings/test.py
index 11e80417..b44ce027 100644
--- a/commerce_coordinator/settings/test.py
+++ b/commerce_coordinator/settings/test.py
@@ -18,6 +18,8 @@
         'paypal': {
             'user_activity_page_url': 'https://test.paypal.com/myaccount/activities/',
             'paypal_webhook_id': PAYPAL_WEBHOOK_ID,
+            'client_id': '',
+            'client_secret': '',
         },
     },
 }
diff --git a/commerce_coordinator/urls.py b/commerce_coordinator/urls.py
index 6bd3409b..4d5a0bc9 100644
--- a/commerce_coordinator/urls.py
+++ b/commerce_coordinator/urls.py
@@ -43,9 +43,6 @@
 from commerce_coordinator.apps.titan import urls as titan_urls
 from commerce_coordinator.settings.base import FAVICON_URL
 
-from commerce_coordinator.apps.paypal.clients import PayPalClient
-
-paypal_client = PayPalClient()
 
 admin.autodiscover()
 
@@ -74,7 +71,6 @@
     re_path(r'^$', lambda r: JsonResponse(data=[
         "Welcome to Commerce Coordinator",
         "This is an API app that provides a backend for Commerce.",
-        str(paypal_client),
     ], status=status.HTTP_200_OK, safe=False), name='root'),
 
     path('favicon.ico', RedirectView.as_view(url=FAVICON_URL), name='favicon'),
@@ -89,4 +85,3 @@
     import debug_toolbar
 
     urlpatterns.append(re_path(r'^__debug__/', include(debug_toolbar.urls)))
-
diff --git a/requirements/base.in b/requirements/base.in
index c9985da9..d36494ba 100644
--- a/requirements/base.in
+++ b/requirements/base.in
@@ -25,6 +25,7 @@ edx-rest-api-client
 mysqlclient
 openedx-filters
 Pillow
+paypal-server-sdk==0.5.1
 pytz
 segment-analytics-python
 stripe
diff --git a/requirements/base.txt b/requirements/base.txt
index 62ca0518..f1484a6b 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -147,8 +147,6 @@ openedx-filters==1.11.0
     # via -r requirements/base.in
 packaging==24.1
     # via marshmallow
-paypal-server-sdk==0.5.1
-    # via -r requirements/base.in
 pbr==6.1.0
     # via stevedore
 pillow==11.0.0
diff --git a/requirements/common_constraints.txt b/requirements/common_constraints.txt
index c54963e0..f40aa200 100644
--- a/requirements/common_constraints.txt
+++ b/requirements/common_constraints.txt
@@ -1,4 +1,8 @@
 
+
+
+
+
 # A central location for most common version constraints
 # (across edx repos) for pip-installation.
 #