diff --git a/modules/connectors/canadapost/karrio/providers/canadapost/shipment/create.py b/modules/connectors/canadapost/karrio/providers/canadapost/shipment/create.py
index e2f9fecc88..1a34664c81 100644
--- a/modules/connectors/canadapost/karrio/providers/canadapost/shipment/create.py
+++ b/modules/connectors/canadapost/karrio/providers/canadapost/shipment/create.py
@@ -49,7 +49,7 @@ def _extract_shipment(
         carrier_name=settings.carrier_name,
         carrier_id=settings.carrier_id,
         tracking_number=info.tracking_pin,
-        shipment_identifier=info.tracking_pin,
+        shipment_identifier=info.shipment_id,
         docs=models.Documents(label=label),
         label_type=ctx["label_type"],
         meta=lib.to_dict(
diff --git a/modules/connectors/canadapost/tests/canadapost/test_shipment.py b/modules/connectors/canadapost/tests/canadapost/test_shipment.py
index 2e1eb5115e..44f94e3b75 100644
--- a/modules/connectors/canadapost/tests/canadapost/test_shipment.py
+++ b/modules/connectors/canadapost/tests/canadapost/test_shipment.py
@@ -87,11 +87,11 @@ def test_cancel_shipment(self):
             info_call, cancel_call = mocks.call_args_list
             self.assertEqual(
                 info_call[1]["url"],
-                f"{gateway.settings.server_url}/rs/2004381/2004381/shipment/123456789012",
+                f"{gateway.settings.server_url}/rs/2004381/2004381/shipment/545021584835957806",
             )
             self.assertEqual(
                 cancel_call[1]["url"],
-                f"{gateway.settings.server_url}/rs/2004381/2004381/shipment/123456789012",
+                f"{gateway.settings.server_url}/rs/2004381/2004381/shipment/545021584835957806",
             )
 
     def test_cancel_transmitted_shipment(self):
@@ -103,11 +103,11 @@ def test_cancel_transmitted_shipment(self):
             info_call, refund_call = mocks.call_args_list
             self.assertEqual(
                 info_call[1]["url"],
-                f"{gateway.settings.server_url}/rs/2004381/2004381/shipment/123456789012",
+                f"{gateway.settings.server_url}/rs/2004381/2004381/shipment/545021584835957806",
             )
             self.assertEqual(
                 refund_call[1]["url"],
-                f"{gateway.settings.server_url}/rs/2004381/2004381/shipment/123456789012/refund",
+                f"{gateway.settings.server_url}/rs/2004381/2004381/shipment/545021584835957806/refund",
             )
 
     def test_parse_shipment_response(self):
@@ -156,7 +156,7 @@ def test_parse_multi_piece_shipment_response(self):
 
 
 shipment_cancel_data = {
-    "shipment_identifier": "123456789012",
+    "shipment_identifier": "545021584835957806",
     "options": {"email": "test@test.com"},
 }
 
@@ -292,7 +292,7 @@ def test_parse_multi_piece_shipment_response(self):
         "carrier_name": "canadapost",
         "carrier_id": "canadapost",
         "tracking_number": "123456789012",
-        "shipment_identifier": "123456789012",
+        "shipment_identifier": "545021584835957806",
         "label_type": "PDF",
         "docs": {"label": ANY},
         "meta": {
@@ -317,7 +317,7 @@ def test_parse_multi_piece_shipment_response(self):
             "manifest_required": False,
         },
         "label_type": "PDF",
-        "shipment_identifier": "123456789012",
+        "shipment_identifier": "545021584835957806",
         "tracking_number": "123456789012",
     },
     [],