diff --git a/tienda_ilusion/don_confiao/serializers.py b/tienda_ilusion/don_confiao/serializers.py
index ccf992e..feba9e9 100644
--- a/tienda_ilusion/don_confiao/serializers.py
+++ b/tienda_ilusion/don_confiao/serializers.py
@@ -38,6 +38,7 @@ class SaleSerializer(serializers.ModelSerializer):
 class CatalogSaleLineSerializer(serializers.ModelSerializer):
     class Meta:
         model = CatalogSaleLine
+        read_only_fields = ["catalog_sale"]
         fields = [
             "id",
             "catalog_sale",
@@ -48,9 +49,7 @@ class CatalogSaleLineSerializer(serializers.ModelSerializer):
 
 
 class CatalogSaleSerializer(serializers.ModelSerializer):
-    catalogsaleline_set = CatalogSaleLineSerializer(
-        many=True, required=False
-    )
+    catalogsaleline_set = CatalogSaleLineSerializer(many=True, required=False)
     total = serializers.ReadOnlyField(source="get_total")
 
     class Meta:
@@ -67,9 +66,7 @@ class CatalogSaleSerializer(serializers.ModelSerializer):
         lines_data = validated_data.pop("catalogsaleline_set", [])
         catalog_sale = CatalogSale.objects.create(**validated_data)
         for line_data in lines_data:
-            CatalogSaleLine.objects.create(
-                catalog_sale=catalog_sale, **line_data
-            )
+            CatalogSaleLine.objects.create(catalog_sale=catalog_sale, **line_data)
         return catalog_sale
 
 
diff --git a/tienda_ilusion/don_confiao/tests/test_api.py b/tienda_ilusion/don_confiao/tests/test_api.py
index 95b4bb1..a49815d 100644
--- a/tienda_ilusion/don_confiao/tests/test_api.py
+++ b/tienda_ilusion/don_confiao/tests/test_api.py
@@ -17,9 +17,7 @@ class TestAPI(APITestCase, LoginMixin):
         self.product = Product.objects.create(
             name="Panela", price=5000, measuring_unit="UNIT"
         )
-        self.customer = Customer.objects.create(
-            name="Camilo", external_id="18"
-        )
+        self.customer = Customer.objects.create(name="Camilo", external_id="18")
 
     def test_create_sale(self):
         response = self._create_sale()
@@ -42,6 +40,7 @@ class TestAPI(APITestCase, LoginMixin):
         sale = CatalogSale.objects.all()[0]
         self.assertEqual(sale.customer.name, self.customer.name)
         self.assertEqual(sale.id, content["id"])
+        self.assertEqual(sale.catalogsaleline_set.count(), 2)
 
     def test_create_sale_with_decimal(self):
         response = self._create_sale_with_decimal()
@@ -66,9 +65,7 @@ class TestAPI(APITestCase, LoginMixin):
         json_response = json.loads(response.content.decode("utf-8"))
         self.assertEqual(response.status_code, 200)
         self.assertEqual(self.customer.name, json_response[0]["name"])
-        self.assertEqual(
-            self.customer.external_id, json_response[0]["external_id"]
-        )
+        self.assertEqual(self.customer.external_id, json_response[0]["external_id"])
 
     def test_get_sales(self):
         url = "/don_confiao/api/sales/"
@@ -190,8 +187,7 @@ class TestAPI(APITestCase, LoginMixin):
         data = {
             "customer": self.customer.id,
             "date": "2024-09-02",
-            "payment_method": "CASH",
-            "saleline_set": [
+            "catalogsaleline_set": [
                 {
                     "product": self.product.id,
                     "quantity": 2,
@@ -203,7 +199,6 @@ class TestAPI(APITestCase, LoginMixin):
                     "unit_price": 5000,
                 },
             ],
-            "catalog_sale": True,
         }
         return self.client.post(url, data, format="json")