diff --git a/.generated-info b/.generated-info
index c6b75250c2..4f706fb14b 100644
--- a/.generated-info
+++ b/.generated-info
@@ -1,4 +1,4 @@
 {
-  "spec_repo_commit": "e22129c",
-  "generated": "2025-08-25 17:47:43.193"
+  "spec_repo_commit": "1e6c346",
+  "generated": "2025-08-25 18:45:46.784"
 }
diff --git a/.generator/schemas/v2/openapi.yaml b/.generator/schemas/v2/openapi.yaml
index e9385b0038..3705ce533d 100644
--- a/.generator/schemas/v2/openapi.yaml
+++ b/.generator/schemas/v2/openapi.yaml
@@ -49699,6 +49699,12 @@ paths:
               schema:
                 $ref: '#/components/schemas/APIErrorResponse'
           description: Forbidden
+        '404':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/APIErrorResponse'
+          description: Not Found
         '429':
           $ref: '#/components/responses/TooManyRequestsResponse'
       security:
@@ -49851,6 +49857,12 @@ paths:
               schema:
                 $ref: '#/components/schemas/APIErrorResponse'
           description: Forbidden
+        '404':
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/APIErrorResponse'
+          description: Not Found
         '429':
           $ref: '#/components/responses/TooManyRequestsResponse'
       security:
diff --git a/tests/v2/cassettes/test_scenarios/test_update_cloud_cost_management_aws_cur_config_returns_not_found_response.frozen b/tests/v2/cassettes/test_scenarios/test_update_cloud_cost_management_aws_cur_config_returns_not_found_response.frozen
new file mode 100644
index 0000000000..a2e736103d
--- /dev/null
+++ b/tests/v2/cassettes/test_scenarios/test_update_cloud_cost_management_aws_cur_config_returns_not_found_response.frozen
@@ -0,0 +1 @@
+2025-08-25T15:10:14.494Z
\ No newline at end of file
diff --git a/tests/v2/cassettes/test_scenarios/test_update_cloud_cost_management_aws_cur_config_returns_not_found_response.yaml b/tests/v2/cassettes/test_scenarios/test_update_cloud_cost_management_aws_cur_config_returns_not_found_response.yaml
new file mode 100644
index 0000000000..9da487f14f
--- /dev/null
+++ b/tests/v2/cassettes/test_scenarios/test_update_cloud_cost_management_aws_cur_config_returns_not_found_response.yaml
@@ -0,0 +1,21 @@
+interactions:
+- request:
+    body: '{"data":{"attributes":{"is_enabled":true},"type":"aws_cur_config_patch_request"}}'
+    headers:
+      accept:
+      - application/json
+      content-type:
+      - application/json
+    method: PATCH
+    uri: https://api.datadoghq.com/api/v2/cost/aws_cur_config/12345678
+  response:
+    body:
+      string: '{"errors":[{"status":"404","title":"Cloud account not found","detail":"Cloud
+        account with ID 12345678 was not found"}]}'
+    headers:
+      content-type:
+      - application/vnd.api+json
+    status:
+      code: 404
+      message: Not Found
+version: 1
diff --git a/tests/v2/cassettes/test_scenarios/test_update_cloud_cost_management_azure_config_returns_not_found_response.frozen b/tests/v2/cassettes/test_scenarios/test_update_cloud_cost_management_azure_config_returns_not_found_response.frozen
new file mode 100644
index 0000000000..de3073eebf
--- /dev/null
+++ b/tests/v2/cassettes/test_scenarios/test_update_cloud_cost_management_azure_config_returns_not_found_response.frozen
@@ -0,0 +1 @@
+2025-08-25T15:10:28.926Z
\ No newline at end of file
diff --git a/tests/v2/cassettes/test_scenarios/test_update_cloud_cost_management_azure_config_returns_not_found_response.yaml b/tests/v2/cassettes/test_scenarios/test_update_cloud_cost_management_azure_config_returns_not_found_response.yaml
new file mode 100644
index 0000000000..6b4bdd81fb
--- /dev/null
+++ b/tests/v2/cassettes/test_scenarios/test_update_cloud_cost_management_azure_config_returns_not_found_response.yaml
@@ -0,0 +1,21 @@
+interactions:
+- request:
+    body: '{"data":{"attributes":{"is_enabled":true},"type":"azure_uc_config_patch_request"}}'
+    headers:
+      accept:
+      - application/json
+      content-type:
+      - application/json
+    method: PATCH
+    uri: https://api.datadoghq.com/api/v2/cost/azure_uc_config/12345678
+  response:
+    body:
+      string: '{"errors":[{"status":"404","title":"Cloud account not found","detail":"Cloud
+        account with ID 12345678 was not found"}]}'
+    headers:
+      content-type:
+      - application/vnd.api+json
+    status:
+      code: 404
+      message: Not Found
+version: 1
diff --git a/tests/v2/features/cloud_cost_management.feature b/tests/v2/features/cloud_cost_management.feature
index 300d7094f7..eed19e63a9 100644
--- a/tests/v2/features/cloud_cost_management.feature
+++ b/tests/v2/features/cloud_cost_management.feature
@@ -267,6 +267,14 @@ Feature: Cloud Cost Management
     When the request is sent
     Then the response status is 200 OK
 
+  @team:Datadog/cloud-cost-management
+  Scenario: Update Cloud Cost Management AWS CUR config returns "Not Found" response
+    Given new "UpdateCostAWSCURConfig" request
+    And request contains "cloud_account_id" parameter with value 12345678
+    And body with value {"data": {"attributes": {"is_enabled": true}, "type": "aws_cur_config_patch_request"}}
+    When the request is sent
+    Then the response status is 404 Not Found
+
   @replay-only @team:Datadog/cloud-cost-management
   Scenario: Update Cloud Cost Management AWS CUR config returns "OK" response
     Given new "UpdateCostAWSCURConfig" request
@@ -284,6 +292,14 @@ Feature: Cloud Cost Management
     When the request is sent
     Then the response status is 400 Bad Request
 
+  @team:Datadog/cloud-cost-management
+  Scenario: Update Cloud Cost Management Azure config returns "Not Found" response
+    Given new "UpdateCostAzureUCConfigs" request
+    And request contains "cloud_account_id" parameter with value 12345678
+    And body with value {"data": {"attributes": {"is_enabled": true}, "type": "azure_uc_config_patch_request"}}
+    When the request is sent
+    Then the response status is 404 Not Found
+
   @replay-only @team:Datadog/cloud-cost-management
   Scenario: Update Cloud Cost Management Azure config returns "OK" response
     Given new "UpdateCostAzureUCConfigs" request