diff --git a/config/api_platform/User.yaml b/config/api_platform/User.yaml
index 17e4801..427c416 100644
--- a/config/api_platform/User.yaml
+++ b/config/api_platform/User.yaml
@@ -21,7 +21,7 @@ resources:
             ApiPlatform\Metadata\Patch:
                 provider: App\State\Provider\UserProvider
             ApiPlatform\Metadata\Post:
-                validation_context:
+                validationContext:
                     groups: [ 'default', 'user:post' ]
             ApiPlatform\Metadata\Delete: ~
 
diff --git a/src/Dto/Input/UserGroupInput.php b/src/Dto/Input/UserGroupInput.php
index d26ef2a..71047cf 100644
--- a/src/Dto/Input/UserGroupInput.php
+++ b/src/Dto/Input/UserGroupInput.php
@@ -13,7 +13,7 @@ final class UserGroupInput
     public ?string $name = null;
 
     #[Groups(['user-group:write'])]
-    public array $permissions = [];
+    public ?array $permissions = [];
 
     #[Assert\NotNull]
     #[Groups(['user-group:write'])]
diff --git a/src/Dto/Input/UserInput.php b/src/Dto/Input/UserInput.php
index 379c5f9..79394c9 100644
--- a/src/Dto/Input/UserInput.php
+++ b/src/Dto/Input/UserInput.php
@@ -23,8 +23,8 @@ final class UserInput
     #[Groups(['user:write'])]
     public array $allowedOrganizationalUnits = [];
 
-    #[Assert\NotBlank(groups: ['user:create'])]
-    #[Assert\Length(min: 8)]
+    #[Assert\NotBlank(groups: ['user:post'])]
+    #[Assert\Length(min: 8, groups: ['user:write', 'user:post'])]
     #[Groups(['user:write'])]
     public ?string $password = null;
 
diff --git a/src/Dto/Output/UserOutput.php b/src/Dto/Output/UserOutput.php
index ec66afe..5cd4d72 100644
--- a/src/Dto/Output/UserOutput.php
+++ b/src/Dto/Output/UserOutput.php
@@ -19,6 +19,8 @@ final class UserOutput extends AbstractOutput
     public bool $enabled;
     #[Groups(['user:read'])]
     public array $allowedOrganizationalUnits;
+    #[Groups(['user:read'])]
+    public array $userGroups;
 
     #[Groups(['user:read'])]
     public \DateTime $createAt;
@@ -33,6 +35,7 @@ final class UserOutput extends AbstractOutput
         $this->username = $user->getUsername();
         $this->roles = $user->getRoles();
         $this->enabled = $user->isEnabled();
+        $this->userGroups = $user->getUserGroups()->toArray();
         $this->allowedOrganizationalUnits = $user->getAllowedOrganizationalUnits()->toArray();
         $this->createAt = $user->getCreatedAt();
         $this->createBy = $user->getCreatedBy();