diff --git a/speid/exc.py b/speid/exc.py
index eb6aa23..740896d 100644
--- a/speid/exc.py
+++ b/speid/exc.py
@@ -31,7 +31,7 @@ class TransactionNeedManualReviewError(Exception):
     error: str
 
 
-class DuplicatedTransaction(Exception):
+class DuplicatedTransactionError(Exception):
     """
     Duplicated transactions are not allowed
     """
diff --git a/speid/tasks/orders.py b/speid/tasks/orders.py
index e762b77..a436b1d 100644
--- a/speid/tasks/orders.py
+++ b/speid/tasks/orders.py
@@ -3,7 +3,7 @@
 
 import clabe
 import luhnmod10
-from mongoengine import DoesNotExist
+from mongoengine import DoesNotExist, NotUniqueError
 from pydantic import ValidationError
 from sentry_sdk import capture_exception
 from stpmex.exc import (
@@ -17,7 +17,7 @@
 )
 
 from speid.exc import (
-    DuplicatedTransaction,
+    DuplicatedTransactionError,
     MalformedOrderException,
     ResendSuccessOrderException,
     ScheduleError,
@@ -58,7 +58,7 @@ def send_order(self, order_val: dict):
         MalformedOrderException,
         ResendSuccessOrderException,
         TransactionNeedManualReviewError,
-        DuplicatedTransaction,
+        DuplicatedTransactionError,
     ) as exc:
         capture_exception(exc)
     except ScheduleError:
@@ -97,8 +97,10 @@ def execute(order_val: dict):
         transaction.events.append(Event(type=EventType.retry))
     except DoesNotExist:
         transaction.events.append(Event(type=EventType.created))
-        transaction.save()
-
+        try:
+            transaction.save()
+        except NotUniqueError:
+            raise DuplicatedTransactionError
     except AssertionError:
         # Se hace un reenvío del estado de la transferencia
         # transaction.set_state(Estado.succeeded)
diff --git a/tests/tasks/test_orders.py b/tests/tasks/test_orders.py
index 172d443..e2ea680 100644
--- a/tests/tasks/test_orders.py
+++ b/tests/tasks/test_orders.py
@@ -5,7 +5,7 @@
 
 import pytest
 from freezegun import freeze_time
-from mongoengine import DoesNotExist, NotUniqueError
+from mongoengine import DoesNotExist
 from stpmex.exc import (
     AccountDoesNotExist,
     BankCodeClabeMismatch,
@@ -18,6 +18,7 @@
 )
 
 from speid.exc import (
+    DuplicatedTransactionError,
     MalformedOrderException,
     ResendSuccessOrderException,
     ScheduleError,
@@ -95,7 +96,7 @@ def test_not_unique_speid_id_are_not_allowed(
         clave_rastreo=order['clave_rastreo']
     )
 
-    with pytest.raises(NotUniqueError), patch(
+    with pytest.raises(DuplicatedTransactionError), patch(
         'speid.tasks.orders.Transaction.create_order'
     ) as mock_create_order, patch(
         # Simulate that in a parallel task execution the order doesn't exist