diff --git a/src/Bundle/ChillDocStoreBundle/Entity/StoredObject.php b/src/Bundle/ChillDocStoreBundle/Entity/StoredObject.php
index 2ee60d80a..abccdccc7 100644
--- a/src/Bundle/ChillDocStoreBundle/Entity/StoredObject.php
+++ b/src/Bundle/ChillDocStoreBundle/Entity/StoredObject.php
@@ -12,7 +12,7 @@ declare(strict_types=1);
 namespace Chill\DocStoreBundle\Entity;
 
 use ChampsLibres\AsyncUploaderBundle\Model\AsyncFileInterface;
-use ChampsLibres\AsyncUploaderBundle\Validator\Constraints\AsyncFileExists;
+use Chill\DocStoreBundle\Validator\Constraints\AsyncFileExists;
 use ChampsLibres\WopiLib\Contract\Entity\Document;
 use Chill\DocGeneratorBundle\Entity\DocGeneratorTemplate;
 use Chill\MainBundle\Doctrine\Model\TrackCreationInterface;
diff --git a/src/Bundle/ChillDocStoreBundle/Form/AccompanyingCourseDocumentType.php b/src/Bundle/ChillDocStoreBundle/Form/AccompanyingCourseDocumentType.php
index 0fced39d3..7ae41f96e 100644
--- a/src/Bundle/ChillDocStoreBundle/Form/AccompanyingCourseDocumentType.php
+++ b/src/Bundle/ChillDocStoreBundle/Form/AccompanyingCourseDocumentType.php
@@ -14,13 +14,10 @@ namespace Chill\DocStoreBundle\Form;
 use Chill\DocStoreBundle\Entity\AccompanyingCourseDocument;
 use Chill\DocStoreBundle\Entity\Document;
 use Chill\DocStoreBundle\Entity\DocumentCategory;
-use Chill\MainBundle\Entity\User;
 use Chill\MainBundle\Form\Type\ChillDateType;
 use Chill\MainBundle\Form\Type\ChillTextareaType;
-use Chill\MainBundle\Security\Authorization\AuthorizationHelper;
-use Chill\MainBundle\Templating\TranslatableStringHelper;
+use Chill\MainBundle\Templating\TranslatableStringHelperInterface;
 use Doctrine\ORM\EntityRepository;
-use Doctrine\Persistence\ObjectManager;
 use Symfony\Bridge\Doctrine\Form\Type\EntityType;
 use Symfony\Component\Form\AbstractType;
 use Symfony\Component\Form\Extension\Core\Type\TextType;
@@ -29,33 +26,9 @@ use Symfony\Component\OptionsResolver\OptionsResolver;
 
 class AccompanyingCourseDocumentType extends AbstractType
 {
-    /**
-     * @var AuthorizationHelper
-     */
-    protected $authorizationHelper;
-
-    /**
-     * @var ObjectManager
-     */
-    protected $om;
-
-    /**
-     * @var TranslatableStringHelper
-     */
-    protected $translatableStringHelper;
-
-    /**
-     * the user running this form.
-     *
-     * @var User
-     */
-    protected $user;
-
     public function __construct(
-        TranslatableStringHelper $translatableStringHelper
-    ) {
-        $this->translatableStringHelper = $translatableStringHelper;
-    }
+        private readonly TranslatableStringHelperInterface $translatableStringHelper
+    ) {}
 
     public function buildForm(FormBuilderInterface $builder, array $options)
     {
diff --git a/src/Bundle/ChillDocStoreBundle/Form/DocumentCategoryType.php b/src/Bundle/ChillDocStoreBundle/Form/DocumentCategoryType.php
index f3506d631..6396314e2 100644
--- a/src/Bundle/ChillDocStoreBundle/Form/DocumentCategoryType.php
+++ b/src/Bundle/ChillDocStoreBundle/Form/DocumentCategoryType.php
@@ -20,23 +20,15 @@ use Symfony\Component\OptionsResolver\OptionsResolver;
 
 class DocumentCategoryType extends AbstractType
 {
-    private $chillBundlesFlipped;
-
-    public function __construct($kernelBundles)
-    {
-        // TODO faire un service dans CHillMain
-        foreach ($kernelBundles as $key => $value) {
-            if (str_starts_with((string) $key, 'Chill')) {
-                $this->chillBundlesFlipped[$value] = $key;
-            }
-        }
-    }
-
     public function buildForm(FormBuilderInterface $builder, array $options)
     {
+        $bundles = [
+            'chill-doc-store' => 'chill-doc-store',
+        ];
+
         $builder
             ->add('bundleId', ChoiceType::class, [
-                'choices' => $this->chillBundlesFlipped,
+                'choices' => $bundles,
                 'disabled' => false,
             ])
             ->add('idInsideBundle', null, [
@@ -44,7 +36,7 @@ class DocumentCategoryType extends AbstractType
             ])
             ->add('documentClass', null, [
                 'disabled' => false,
-            ]) // cahcerh par default PersonDocument
+            ])
             ->add('name', TranslatableStringFormType::class);
     }
 
diff --git a/src/Bundle/ChillDocStoreBundle/Form/StoredObjectType.php b/src/Bundle/ChillDocStoreBundle/Form/StoredObjectType.php
index 77484208f..414d94f20 100644
--- a/src/Bundle/ChillDocStoreBundle/Form/StoredObjectType.php
+++ b/src/Bundle/ChillDocStoreBundle/Form/StoredObjectType.php
@@ -11,7 +11,7 @@ declare(strict_types=1);
 
 namespace Chill\DocStoreBundle\Form;
 
-use ChampsLibres\AsyncUploaderBundle\Form\Type\AsyncUploaderType;
+use Chill\DocStoreBundle\Form\Type\AsyncUploaderType;
 use Chill\DocStoreBundle\Entity\StoredObject;
 use Doctrine\ORM\EntityManagerInterface;
 use Symfony\Component\Form\AbstractType;
@@ -26,15 +26,7 @@ use Symfony\Component\OptionsResolver\OptionsResolver;
  */
 class StoredObjectType extends AbstractType
 {
-    /**
-     * @var EntityManagerInterface
-     */
-    protected $em;
-
-    public function __construct(EntityManagerInterface $em)
-    {
-        $this->em = $em;
-    }
+    public function __construct(private readonly EntityManagerInterface $em) {}
 
     public function buildForm(FormBuilderInterface $builder, array $options)
     {
diff --git a/src/Bundle/ChillDocStoreBundle/Form/Type/AsyncUploaderType.php b/src/Bundle/ChillDocStoreBundle/Form/Type/AsyncUploaderType.php
new file mode 100644
index 000000000..58d4eebb1
--- /dev/null
+++ b/src/Bundle/ChillDocStoreBundle/Form/Type/AsyncUploaderType.php
@@ -0,0 +1,77 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Chill\DocStoreBundle\Form\Type;
+
+use Symfony\Component\DependencyInjection\ParameterBag\ParameterBagInterface;
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\FormInterface;
+use Symfony\Component\Form\FormView;
+use Symfony\Component\Form\Extension\Core\Type\HiddenType;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+use Symfony\Component\Routing\Generator\UrlGeneratorInterface;
+
+class AsyncUploaderType extends AbstractType
+{
+    private readonly int $expires_delay;
+    private readonly int $max_submit_delay;
+    private readonly int $max_post_file_size;
+
+    public function __construct(
+        private readonly UrlGeneratorInterface $url_generator,
+        ParameterBagInterface $parameters,
+    ) {
+        $config = $parameters->get('chill_doc_store')['openstack']['temp_url'];
+
+        $this->expires_delay = $config['max_expires_delay'];
+        $this->max_submit_delay = $config['max_submit_delay'];
+        $this->max_post_file_size = $config['max_post_file_size'];
+    }
+
+    public function configureOptions(OptionsResolver $resolver)
+    {
+        $resolver->setDefaults([
+            'expires_delay' => $this->expires_delay,
+            'max_post_size' => $this->max_post_file_size,
+            'submit_delay'  => $this->max_submit_delay,
+            'max_files' => 1,
+            'error_bubbling' => false,
+        ]);
+
+        $resolver->setAllowedTypes('expires_delay', ['int']);
+        $resolver->setAllowedTypes('max_post_size', ['int']);
+        $resolver->setAllowedTypes('max_files', ['int']);
+        $resolver->setAllowedTypes('submit_delay', ['int']);
+    }
+
+    public function buildView(
+        FormView $view,
+        FormInterface $form,
+        array $options
+    ) {
+        $view->vars['attr']['data-async-file-upload'] = true;
+        $view->vars['attr']['data-generate-temp-url-post'] = $this
+            ->url_generator->generate('async_upload.generate_url', [
+                'expires_delay' => $options['expires_delay'],
+                'method' => 'post',
+                'submit_delay' => $options['submit_delay'],
+            ]);
+        $view->vars['attr']['data-temp-url-get'] = $this->url_generator
+            ->generate('async_upload.generate_url', ['method' => 'GET']);
+        $view->vars['attr']['data-max-files'] = $options['max_files'];
+        $view->vars['attr']['data-max-post-size'] = $options['max_post_size'];
+    }
+
+    public function getParent()
+    {
+        return HiddenType::class;
+    }
+}
diff --git a/src/Bundle/ChillDocStoreBundle/Tests/Validator/Constraints/AsyncFileExistsValidatorTest.php b/src/Bundle/ChillDocStoreBundle/Tests/Validator/Constraints/AsyncFileExistsValidatorTest.php
new file mode 100644
index 000000000..6e46ee370
--- /dev/null
+++ b/src/Bundle/ChillDocStoreBundle/Tests/Validator/Constraints/AsyncFileExistsValidatorTest.php
@@ -0,0 +1,67 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Chill\DocStoreBundle\Tests\Validator\Constraints;
+
+use Chill\DocStoreBundle\AsyncUpload\SignedUrl;
+use Chill\DocStoreBundle\AsyncUpload\TempUrlGeneratorInterface;
+use Chill\DocStoreBundle\Entity\StoredObject;
+use Chill\DocStoreBundle\Validator\Constraints\AsyncFileExists;
+use Chill\DocStoreBundle\Validator\Constraints\AsyncFileExistsValidator;
+use Prophecy\Argument;
+use Prophecy\PhpUnit\ProphecyTrait;
+use Symfony\Component\HttpClient\MockHttpClient;
+use Symfony\Component\HttpClient\Response\MockResponse;
+use Symfony\Component\Validator\Test\ConstraintValidatorTestCase;
+
+/**
+ * @internal
+ *
+ * @coversNothing
+ */
+class AsyncFileExistsValidatorTest extends ConstraintValidatorTestCase
+{
+    use ProphecyTrait;
+
+    protected function createValidator()
+    {
+        $client = new MockHttpClient(function ($method, $url, $options): MockResponse {
+            if (str_contains((string) $url, '404')) {
+                return new MockResponse('', ['http_code' => 404]);
+            }
+
+            return new MockResponse('', ['http_code' => 200]);
+        });
+
+        $generator = $this->prophesize(TempUrlGeneratorInterface::class);
+        $generator->generate(Argument::in(['GET', 'HEAD']), Argument::type('string'), Argument::any())
+            ->will(fn (array $args): SignedUrl => new SignedUrl($args[0], 'https://object.store.example/container/'.$args[1], new \DateTimeImmutable('1 hours')));
+
+        return new AsyncFileExistsValidator($generator->reveal(), $client);
+    }
+
+    public function testWhenFileExistsIsValid(): void
+    {
+        $this->validator->validate((new StoredObject())->setFilename('present'), new AsyncFileExists());
+
+        $this->assertNoViolation();
+    }
+
+    public function testWhenFileIsNotPresent(): void
+    {
+        $this->validator->validate(
+            (new StoredObject())->setFilename('is_404'),
+            new AsyncFileExists(['message' => 'my_message'])
+        );
+
+        $this->buildViolation('my_message')->setParameter('{{ filename }}', 'is_404')->assertRaised();
+    }
+}
diff --git a/src/Bundle/ChillDocStoreBundle/Validator/Constraints/AsyncFileExists.php b/src/Bundle/ChillDocStoreBundle/Validator/Constraints/AsyncFileExists.php
new file mode 100644
index 000000000..4e251629b
--- /dev/null
+++ b/src/Bundle/ChillDocStoreBundle/Validator/Constraints/AsyncFileExists.php
@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Chill\DocStoreBundle\Validator\Constraints;
+
+use Symfony\Component\Validator\Constraint;
+
+/**
+ * @Annotation
+ */
+final class AsyncFileExists extends Constraint
+{
+    public string $message = "The file '{{ filename }}' is not stored properly.";
+
+    public function validatedBy()
+    {
+        return AsyncFileExistsValidator::class;
+    }
+
+    public function getTargets()
+    {
+        return [Constraint::CLASS_CONSTRAINT, Constraint::PROPERTY_CONSTRAINT];
+    }
+}
diff --git a/src/Bundle/ChillDocStoreBundle/Validator/Constraints/AsyncFileExistsValidator.php b/src/Bundle/ChillDocStoreBundle/Validator/Constraints/AsyncFileExistsValidator.php
new file mode 100644
index 000000000..f9b64222f
--- /dev/null
+++ b/src/Bundle/ChillDocStoreBundle/Validator/Constraints/AsyncFileExistsValidator.php
@@ -0,0 +1,67 @@
+<?php
+
+declare(strict_types=1);
+
+/*
+ * Chill is a software for social workers
+ *
+ * For the full copyright and license information, please view
+ * the LICENSE file that was distributed with this source code.
+ */
+
+namespace Chill\DocStoreBundle\Validator\Constraints;
+
+use Chill\DocStoreBundle\AsyncUpload\TempUrlGeneratorInterface;
+use Chill\DocStoreBundle\Entity\StoredObject;
+use Symfony\Component\Validator\Constraint;
+use Symfony\Component\Validator\ConstraintValidator;
+use Symfony\Component\Validator\Exception\UnexpectedTypeException;
+use Symfony\Component\Validator\Exception\UnexpectedValueException;
+use Symfony\Contracts\HttpClient\Exception\HttpExceptionInterface;
+use Symfony\Contracts\HttpClient\HttpClientInterface;
+
+final class AsyncFileExistsValidator extends ConstraintValidator
+{
+    public function __construct(
+        private readonly TempUrlGeneratorInterface $tempUrlGenerator,
+        private readonly HttpClientInterface $client
+    ) {}
+
+    public function validate($value, Constraint $constraint): void
+    {
+        if ($value instanceof StoredObject) {
+            $this->validateObject($value->getFilename(), $constraint);
+        } elseif (is_string($value)) {
+            $this->validateObject($value, $constraint);
+        } else {
+            throw new UnexpectedValueException($value, StoredObject::class.' or string');
+        }
+    }
+
+    protected function validateObject(string $file, Constraint $constraint): void
+    {
+        if (!$constraint instanceof AsyncFileExists) {
+            throw new UnexpectedTypeException($constraint, AsyncFileExists::class);
+        }
+
+        $urlHead = $this->tempUrlGenerator->generate(
+            'HEAD',
+            $file,
+            30
+        );
+
+        try {
+            $response = $this->client->request('HEAD', $urlHead->url);
+
+            if (404 === $response->getStatusCode()) {
+                $this->context->buildViolation($constraint->message)
+                    ->setParameter('{{ filename }}', $file)
+                    ->addViolation();
+            }
+        } catch (HttpExceptionInterface $exception) {
+            if (404 !== $exception->getResponse()->getStatusCode()) {
+                throw $exception;
+            }
+        }
+    }
+}
diff --git a/src/Bundle/ChillDocStoreBundle/config/services.yaml b/src/Bundle/ChillDocStoreBundle/config/services.yaml
index c510064f1..27c04a60e 100644
--- a/src/Bundle/ChillDocStoreBundle/config/services.yaml
+++ b/src/Bundle/ChillDocStoreBundle/config/services.yaml
@@ -8,18 +8,6 @@ services:
         tags:
             - { name: doctrine.repository_service }
 
-    Chill\DocStoreBundle\Form\DocumentCategoryType:
-        class: Chill\DocStoreBundle\Form\DocumentCategoryType
-        arguments: [ "%kernel.bundles%" ]
-        tags:
-            - { name: form.type }
-
-    Chill\DocStoreBundle\Form\PersonDocumentType:
-        class: Chill\DocStoreBundle\Form\PersonDocumentType
-        # arguments:
-        #   - "@chill.main.helper.translatable_string"
-        tags:
-            - { name: form.type, alias: chill_docstorebundle_form_document }
 
     Chill\DocStoreBundle\Security\Authorization\:
         resource: "./../Security/Authorization"
@@ -54,6 +42,9 @@ services:
     Chill\DocStoreBundle\GenericDoc\Renderer\:
         resource: '../GenericDoc/Renderer/'
 
+    Chill\DocStoreBundle\Validator\:
+        resource: '../Validator'
+
     Chill\DocStoreBundle\AsyncUpload\Driver\:
         resource: '../AsyncUpload/Driver/'
 
diff --git a/src/Bundle/ChillDocStoreBundle/config/services/form.yaml b/src/Bundle/ChillDocStoreBundle/config/services/form.yaml
index 8d53d81f1..7515f306a 100644
--- a/src/Bundle/ChillDocStoreBundle/config/services/form.yaml
+++ b/src/Bundle/ChillDocStoreBundle/config/services/form.yaml
@@ -1,13 +1,15 @@
 services:
-  Chill\DocStoreBundle\Form\StoredObjectType:
-    arguments:
-      $em: '@Doctrine\ORM\EntityManagerInterface'
-    tags:
-      - { name: form.type }
+    _defaults:
+        autowire: true
+        autoconfigure: true
 
-  Chill\DocStoreBundle\Form\AccompanyingCourseDocumentType:
-    class: Chill\DocStoreBundle\Form\AccompanyingCourseDocumentType
-    arguments:
-      - "@chill.main.helper.translatable_string"
-    tags:
-      - { name: form.type, alias: chill_docstorebundle_form_document }
+    Chill\DocStoreBundle\Form\:
+        resource: '../../Form'
+
+    Chill\DocStoreBundle\Form\PersonDocumentType:
+        tags:
+            - { name: form.type, alias: chill_docstorebundle_form_document }
+
+    Chill\DocStoreBundle\Form\AccompanyingCourseDocumentType:
+        tags:
+            - { name: form.type, alias: chill_docstorebundle_form_document }