diff --git a/features/json/input_output.feature b/features/json/input_output.feature
index 5f1982c0098..2a5a1143162 100644
--- a/features/json/input_output.feature
+++ b/features/json/input_output.feature
@@ -9,7 +9,7 @@ Feature: JSON DTO input and output
 
   @createSchema
   Scenario: Request a password reset
-    And I send a "POST" request to "/users/password_reset_request" with body:
+    And I send a "POST" request to "/users_reset/password_reset_request" with body:
     """
     {
       "email": "user@example.com"
@@ -27,7 +27,7 @@ Feature: JSON DTO input and output
 
   @createSchema
   Scenario: Request a password reset for a non-existent user
-    And I send a "POST" request to "/users/password_reset_request" with body:
+    And I send a "POST" request to "/users_reset/password_reset_request" with body:
     """
     {
       "email": "does-not-exist@example.com"
diff --git a/src/OpenApi/Factory/OpenApiFactory.php b/src/OpenApi/Factory/OpenApiFactory.php
index fe0e6c867b6..abed0cf19c9 100644
--- a/src/OpenApi/Factory/OpenApiFactory.php
+++ b/src/OpenApi/Factory/OpenApiFactory.php
@@ -498,11 +498,13 @@ private function collectPaths(ApiResource $resource, ResourceMetadataCollection
 
     private function buildOpenApiResponse(array $existingResponses, int|string $status, string $description, ?Operation $openapiOperation = null, ?HttpOperation $operation = null, ?array $responseMimeTypes = null, ?array $operationOutputSchemas = null, ?ResourceMetadataCollection $resourceMetadataCollection = null): Operation
     {
+        $noOutput = \is_array($operation?->getOutput()) && null === $operation->getOutput()['class'];
+
         if (isset($existingResponses[$status])) {
             return $openapiOperation;
         }
         $responseLinks = $responseContent = null;
-        if ($responseMimeTypes && $operationOutputSchemas) {
+        if ($responseMimeTypes && $operationOutputSchemas && !$noOutput) {
             $responseContent = $this->buildContent($responseMimeTypes, $operationOutputSchemas);
         }
         if ($resourceMetadataCollection && $operation) {
diff --git a/src/State/Exception/ParameterNotSupportedException.php b/src/State/Exception/ParameterNotSupportedException.php
index f3d149c825e..97694bea8a1 100644
--- a/src/State/Exception/ParameterNotSupportedException.php
+++ b/src/State/Exception/ParameterNotSupportedException.php
@@ -28,7 +28,7 @@ public function getType(): string
         return '/error/400';
     }
 
-    public function getTitle(): ?string
+    public function getTitle(): string
     {
         return $this->message;
     }
diff --git a/tests/Fixtures/TestBundle/ApiResource/WithParameter.php b/tests/Fixtures/TestBundle/ApiResource/WithParameter.php
index cda390c124a..dfb8c4d04dd 100644
--- a/tests/Fixtures/TestBundle/ApiResource/WithParameter.php
+++ b/tests/Fixtures/TestBundle/ApiResource/WithParameter.php
@@ -96,23 +96,24 @@
     uriTemplate: 'validate_parameters{._format}',
     parameters: [
         'enum' => new QueryParameter(
-            schema: ['enum' => ['a', 'b'], 'uniqueItems' => true],
+            schema: ['enum' => ['a', 'b'], 'uniqueItems' => true, 'type' => 'array'],
             castToArray: true,
             openApi: new OpenApiParameter(name: 'enum', in: 'query', style: 'deepObject')
         ),
         'enumNotDeepObject' => new QueryParameter(
-            schema: ['enum' => ['a', 'b'], 'uniqueItems' => true],
+            schema: ['enum' => ['a', 'b'], 'uniqueItems' => true, 'type' => 'string'],
             castToArray: true,
+            castToNativeType: true,
         ),
         'num' => new QueryParameter(
-            schema: ['minimum' => 1, 'maximum' => 3],
+            schema: ['minimum' => 1, 'maximum' => 3, 'type' => 'integer'],
             nativeType: new BuiltinType(TypeIdentifier::STRING),
         ),
         'numMultipleType' => new QueryParameter(
-            schema: ['minimum' => 1, 'maximum' => 3],
+            schema: ['minimum' => 1, 'maximum' => 3, 'type' => 'array'],
         ),
         'exclusiveNum' => new QueryParameter(
-            schema: ['exclusiveMinimum' => 1, 'exclusiveMaximum' => 3],
+            schema: ['exclusiveMinimum' => 1, 'exclusiveMaximum' => 3, 'type' => 'integer'],
             nativeType: new BuiltinType(TypeIdentifier::STRING),
         ),
         'blank' => new QueryParameter(
@@ -120,12 +121,12 @@
             nativeType: new BuiltinType(TypeIdentifier::STRING),
         ),
         'length' => new QueryParameter(
-            schema: ['maxLength' => 1, 'minLength' => 3],
+            schema: ['maxLength' => 1, 'minLength' => 3, 'type' => 'integer'],
             nativeType: new BuiltinType(TypeIdentifier::STRING),
         ),
-        'array' => new QueryParameter(schema: ['minItems' => 2, 'maxItems' => 3]),
+        'array' => new QueryParameter(schema: ['minItems' => 2, 'maxItems' => 3, 'type' => 'integer']),
         'multipleOf' => new QueryParameter(
-            schema: ['multipleOf' => 2],
+            schema: ['multipleOf' => 2, 'type' => 'integer'],
             nativeType: new BuiltinType(TypeIdentifier::STRING),
         ),
         'int' => new QueryParameter(
diff --git a/tests/Fixtures/TestBundle/Entity/User.php b/tests/Fixtures/TestBundle/Entity/User.php
index 004f51b5d61..6890002ca8f 100644
--- a/tests/Fixtures/TestBundle/Entity/User.php
+++ b/tests/Fixtures/TestBundle/Entity/User.php
@@ -37,7 +37,7 @@
  */
 #[ApiResource(operations: [
     new Post(
-        uriTemplate: '/users/password_reset_request',
+        uriTemplate: '/users_reset/password_reset_request',
         messenger: 'input',
         input: PasswordResetRequest::class,
         output: PasswordResetRequestResult::class,
diff --git a/tests/Functional/Parameters/ValidationTest.php b/tests/Functional/Parameters/ValidationTest.php
index 803f1645e29..2ef96eb21b5 100644
--- a/tests/Functional/Parameters/ValidationTest.php
+++ b/tests/Functional/Parameters/ValidationTest.php
@@ -58,9 +58,6 @@ public static function provideQueryStrings(): array
             [
                 'enumNotDeepObject[]=c&enumNotDeepObject[]=c',
                 [
-                    [
-                        'propertyPath' => 'enumNotDeepObject', 'message' => 'The value you selected is not a valid choice.',
-                    ],
                     [
                         'propertyPath' => 'enumNotDeepObject', 'message' => 'The value you selected is not a valid choice.',
                     ],