diff --git a/src/Bridge/Symfony/Routing/ApiLoader.php b/src/Bridge/Symfony/Routing/ApiLoader.php
index 8f5e7bdffa0..aa9a85ae13c 100644
--- a/src/Bridge/Symfony/Routing/ApiLoader.php
+++ b/src/Bridge/Symfony/Routing/ApiLoader.php
@@ -111,6 +111,8 @@ public function load($data, $type = null): RouteCollection
                             'property' => $operation['property'],
                             'identifiers' => $operation['identifiers'],
                             'collection' => $operation['collection'],
+                            'parent_resource_class' => $resourceClass,
+                            'parent_operation_name' => $operation['operation_name'],
                             'operationId' => $operationId,
                         ],
                     ] + $operation['defaults'] ?? [],
diff --git a/src/Serializer/SerializerContextBuilder.php b/src/Serializer/SerializerContextBuilder.php
index ccf76e61952..776122a7428 100644
--- a/src/Serializer/SerializerContextBuilder.php
+++ b/src/Serializer/SerializerContextBuilder.php
@@ -42,36 +42,43 @@ public function createFromRequest(Request $request, bool $normalization, array $
             throw new RuntimeException('Request attributes are not valid.');
         }
 
-        $resourceMetadata = $this->resourceMetadataFactory->create($attributes['resource_class']);
         $key = $normalization ? 'normalization_context' : 'denormalization_context';
 
-        $operationKey = null;
-        $operationType = null;
-
         if (isset($attributes['collection_operation_name'])) {
-            $operationKey = 'collection_operation_name';
-            $operationType = OperationType::COLLECTION;
-        } elseif (isset($attributes['subresource_operation_name'])) {
-            $operationKey = 'subresource_operation_name';
-            $operationType = OperationType::SUBRESOURCE;
-        }
+            $attribute = $attributes['collection_operation_name'];
+            $resourceClass = $attributes['resource_class'];
 
-        if (null !== $operationKey) {
-            $attribute = $attributes[$operationKey];
+            $resourceMetadata = $this->resourceMetadataFactory->create($resourceClass);
             $context = $resourceMetadata->getCollectionOperationAttribute($attribute, $key, [], true);
-            $context[$operationKey] = $attribute;
+
+            $context['collection_operation_name'] = $attribute;
+            $context['resource_class'] = $resourceClass;
+            $context['operation_type'] = OperationType::COLLECTION;
+        } elseif (isset($attributes['subresource_operation_name'])) {
+            $attribute = $attributes['subresource_operation_name'];
+            $resourceClass = $attributes['resource_class'];
+            $parentClass = $attributes['subresource_context']['parent_resource_class'];
+            $parentOperationName = $attributes['subresource_context']['parent_operation_name'];
+
+            $parentMetadata = $this->resourceMetadataFactory->create($parentClass);
+            $context = $parentMetadata->getSubresourceOperationAttribute($parentOperationName, $key, [], true);
+
+            $context['subresource_operation_name'] = $attribute;
+            $context['resource_class'] = $resourceClass;
+            $context['operation_type'] = OperationType::SUBRESOURCE;
         } else {
+            $resourceClass = $attributes['resource_class'];
+            $resourceMetadata = $this->resourceMetadataFactory->create($resourceClass);
             $context = $resourceMetadata->getItemOperationAttribute($attributes['item_operation_name'], $key, [], true);
             $context['item_operation_name'] = $attributes['item_operation_name'];
+            $context['resource_class'] = $attributes['resource_class'];
+            $context['operation_type'] = OperationType::ITEM;
         }
 
-        $context['operation_type'] = $operationType ?: OperationType::ITEM;
-
         if (!$normalization && !isset($context['api_allow_update'])) {
             $context['api_allow_update'] = Request::METHOD_PUT === $request->getMethod();
         }
 
-        $context['resource_class'] = $attributes['resource_class'];
         $context['request_uri'] = $request->getRequestUri();
 
         if (isset($attributes['subresource_context'])) {
diff --git a/src/Util/RequestAttributesExtractor.php b/src/Util/RequestAttributesExtractor.php
index 77d60e91119..954adf6bf53 100644
--- a/src/Util/RequestAttributesExtractor.php
+++ b/src/Util/RequestAttributesExtractor.php
@@ -41,14 +41,14 @@ public static function extractAttributes(Request $request)
     {
         $result = ['resource_class' => $request->attributes->get('_api_resource_class')];
 
-        if ($subresourceContext = $request->attributes->get('_api_subresource_context')) {
-            $result['subresource_context'] = $subresourceContext;
-        }
-
         if (null === $result['resource_class']) {
             return [];
         }
 
+        if ($subresourceContext = $request->attributes->get('_api_subresource_context')) {
+            $result['subresource_context'] = $subresourceContext;
+        }
+
         $hasRequestAttributeKey = false;
         foreach (OperationType::TYPES as $operationType) {
             $attribute = "_api_{$operationType}_operation_name";