diff --git a/Knots/DTO/Discussion/CreateDiscussionDto.cs b/Knots/DTO/Discussion/CreateDiscussionDto.cs
index 20d543e..1e9e9d6 100644
--- a/Knots/DTO/Discussion/CreateDiscussionDto.cs
+++ b/Knots/DTO/Discussion/CreateDiscussionDto.cs
@@ -2,5 +2,5 @@ namespace Knots.DTO.Discussion;
 
 public class CreateDiscussionDto
 {
-    
+    public int Id { get; set; }
 }
\ No newline at end of file
diff --git a/Knots/DTO/Discussion/DeleteDiscussionDto.cs b/Knots/DTO/Discussion/DeleteDiscussionDto.cs
index 5f89be5..8b543dd 100644
--- a/Knots/DTO/Discussion/DeleteDiscussionDto.cs
+++ b/Knots/DTO/Discussion/DeleteDiscussionDto.cs
@@ -2,5 +2,5 @@ namespace Knots.DTO.Discussion;
 
 public class DeleteDiscussionDto
 {
-    
+    public int Id { get; set; }
 }
\ No newline at end of file
diff --git a/Knots/DTO/Discussion/GetDiscussionDto.cs b/Knots/DTO/Discussion/GetDiscussionDto.cs
index 68e0f0b..8223b52 100644
--- a/Knots/DTO/Discussion/GetDiscussionDto.cs
+++ b/Knots/DTO/Discussion/GetDiscussionDto.cs
@@ -2,5 +2,5 @@ namespace Knots.DTO.Discussion;
 
 public class GetDiscussionDto
 {
-    
+    public int Id { get; set; }
 }
\ No newline at end of file
diff --git a/Knots/DTO/Group/GetGroupDetailsDto.cs b/Knots/DTO/Group/GetGroupDetailsDto.cs
new file mode 100644
index 0000000..ebb220c
--- /dev/null
+++ b/Knots/DTO/Group/GetGroupDetailsDto.cs
@@ -0,0 +1,9 @@
+namespace Knots.DTO.Group;
+
+public class GetGroupDetailsDto
+{
+    public int Id { get; set; }
+    public string? Nom { get; set; }
+    public int NombreMembres { get; set; }
+    public string? ProfilePicture { get; set; }
+}
\ No newline at end of file
diff --git a/Knots/DTO/Group/GetGroupDto.cs b/Knots/DTO/Group/GetGroupDto.cs
index cc9f833..8338582 100644
--- a/Knots/DTO/Group/GetGroupDto.cs
+++ b/Knots/DTO/Group/GetGroupDto.cs
@@ -3,7 +3,4 @@ namespace Knots.DTO.Group;
 public class GetGroupDto
 {
     public int Id { get; set; }
-    public string? Nom { get; set; }
-    public int NombreMembres { get; set; }
-    public string? ProfilePicture { get; set; }
 }
\ No newline at end of file
diff --git a/Knots/DTO/Key/GetKeyDetailsDto.cs b/Knots/DTO/Key/GetKeyDetailsDto.cs
new file mode 100644
index 0000000..56e2dd5
--- /dev/null
+++ b/Knots/DTO/Key/GetKeyDetailsDto.cs
@@ -0,0 +1,7 @@
+namespace Knots.DTO.Key;
+
+public class GetKeyDetailsDto
+{
+    public int Id { get; set; }
+    public string? EnKey { get; set; }
+}
\ No newline at end of file
diff --git a/Knots/DTO/Key/GetKeyDto.cs b/Knots/DTO/Key/GetKeyDto.cs
index f4ffe0e..0a5c7c4 100644
--- a/Knots/DTO/Key/GetKeyDto.cs
+++ b/Knots/DTO/Key/GetKeyDto.cs
@@ -3,5 +3,4 @@ namespace Knots.DTO.Key;
 public class GetKeyDto
 {
     public int Id { get; set; }
-    public string? EnKey { get; set; }
 }
\ No newline at end of file
diff --git a/Knots/DTO/Message/GetMessageDetailsDto.cs b/Knots/DTO/Message/GetMessageDetailsDto.cs
new file mode 100644
index 0000000..e1373c5
--- /dev/null
+++ b/Knots/DTO/Message/GetMessageDetailsDto.cs
@@ -0,0 +1,8 @@
+namespace Knots.DTO.Message;
+
+public class GetMessageDetailsDto
+{
+    public string? Contenu { get; set; }
+    public DateTime Date { get; set; }
+    public Boolean Type { get; set; }
+}
\ No newline at end of file
diff --git a/Knots/DTO/Message/GetMessageDto.cs b/Knots/DTO/Message/GetMessageDto.cs
index 3348f08..a3e4f62 100644
--- a/Knots/DTO/Message/GetMessageDto.cs
+++ b/Knots/DTO/Message/GetMessageDto.cs
@@ -2,7 +2,5 @@ namespace Knots.DTO.Message;
 
 public class GetMessageDto
 {
-    public string? Contenu { get; set; }
-    public DateTime Date { get; set; }
-    public Boolean Type { get; set; }
+   public int Id { get; set; }
 }
\ No newline at end of file
diff --git a/Knots/DTO/User/CreateUserDto.cs b/Knots/DTO/User/CreateUserDto.cs
new file mode 100644
index 0000000..5764ef9
--- /dev/null
+++ b/Knots/DTO/User/CreateUserDto.cs
@@ -0,0 +1,11 @@
+namespace Knots.DTO.User;
+
+public class CreateUserDto
+{
+    public string? Username { get; set; }
+    public string? Description {get; set;}
+    public string? Password { get; set; }
+    public string? Email { get; set; }
+    public string? Tel { get; set; }
+    public string? ProfilePicture { get; set; }
+}
\ No newline at end of file
diff --git a/Knots/DTO/User/DeleteUserDto.cs b/Knots/DTO/User/DeleteUserDto.cs
new file mode 100644
index 0000000..3768952
--- /dev/null
+++ b/Knots/DTO/User/DeleteUserDto.cs
@@ -0,0 +1,6 @@
+namespace Knots.DTO.User;
+
+public class DeleteUserDto
+{
+    public string? Username { get; set; }
+}
\ No newline at end of file
diff --git a/Knots/DTO/User/GetUserDetailsDto.cs b/Knots/DTO/User/GetUserDetailsDto.cs
new file mode 100644
index 0000000..98614c7
--- /dev/null
+++ b/Knots/DTO/User/GetUserDetailsDto.cs
@@ -0,0 +1,11 @@
+namespace Knots.DTO.User;
+
+public class GetUserDetailsDto
+{
+    public string? Username { get; set; }
+    public string? Description {get; set;}
+    public string? Password { get; set; }
+    public string? Email { get; set; }
+    public string? Tel { get; set; }
+    public string? ProfilePicture { get; set; }
+}
\ No newline at end of file
diff --git a/Knots/DTO/User/GetUserDto.cs b/Knots/DTO/User/GetUserDto.cs
new file mode 100644
index 0000000..e2bb8ad
--- /dev/null
+++ b/Knots/DTO/User/GetUserDto.cs
@@ -0,0 +1,6 @@
+namespace Knots.DTO.User;
+
+public class GetUserDto
+{
+    public string? Username { get; set; }
+}
\ No newline at end of file
diff --git a/Knots/DTO/User/UpdateUserDto.cs b/Knots/DTO/User/UpdateUserDto.cs
new file mode 100644
index 0000000..d0f8a0a
--- /dev/null
+++ b/Knots/DTO/User/UpdateUserDto.cs
@@ -0,0 +1,11 @@
+namespace Knots.DTO.User;
+
+public class UpdateUserDto
+{
+    public string? Username { get; set; }
+    public string? Description {get; set;}
+    public string? Password { get; set; }
+    public string? Email { get; set; }
+    public string? Tel { get; set; }
+    public string? ProfilePicture { get; set; }
+}
\ No newline at end of file
diff --git a/Knots/Knots.csproj b/Knots/Knots.csproj
index f899835..93bf7cf 100644
--- a/Knots/Knots.csproj
+++ b/Knots/Knots.csproj
@@ -19,9 +19,10 @@
     </ItemGroup>
 
     <ItemGroup>
-      <Folder Include="DTO\User\" />
       <Folder Include="Endpoints\" />
-      <Folder Include="Validators\" />
+      <Folder Include="Validators\Group\" />
+      <Folder Include="Validators\Key\" />
+      <Folder Include="Validators\Message\" />
     </ItemGroup>
 
 </Project>
diff --git a/Knots/Validators/Discussion/CreateDiscussionDtoValidator.cs b/Knots/Validators/Discussion/CreateDiscussionDtoValidator.cs
new file mode 100644
index 0000000..ba6106d
--- /dev/null
+++ b/Knots/Validators/Discussion/CreateDiscussionDtoValidator.cs
@@ -0,0 +1,6 @@
+namespace Knots.Validators.Discussion;
+
+public class CreateDiscussionDtoValidator
+{
+    
+}
\ No newline at end of file
diff --git a/Knots/Validators/Discussion/DeleteDiscussionDtoValidator.cs b/Knots/Validators/Discussion/DeleteDiscussionDtoValidator.cs
new file mode 100644
index 0000000..c8f1c64
--- /dev/null
+++ b/Knots/Validators/Discussion/DeleteDiscussionDtoValidator.cs
@@ -0,0 +1,6 @@
+namespace Knots.Validators.Discussion;
+
+public class DeleteDiscussionDtoValidator
+{
+    
+}
\ No newline at end of file
diff --git a/Knots/Validators/Discussion/GetDiscussionDtoValidator.cs b/Knots/Validators/Discussion/GetDiscussionDtoValidator.cs
new file mode 100644
index 0000000..c73960f
--- /dev/null
+++ b/Knots/Validators/Discussion/GetDiscussionDtoValidator.cs
@@ -0,0 +1,6 @@
+namespace Knots.Validators.Discussion;
+
+public class GetDiscussionDtoValidator
+{
+    
+}
\ No newline at end of file
diff --git a/Knots/Validators/Role/CreateRoleDtoValidator.cs b/Knots/Validators/Role/CreateRoleDtoValidator.cs
new file mode 100644
index 0000000..d4eb2dc
--- /dev/null
+++ b/Knots/Validators/Role/CreateRoleDtoValidator.cs
@@ -0,0 +1,6 @@
+namespace Knots.Validators.Role;
+
+public class CreateRoleDtoValidator
+{
+    
+}
\ No newline at end of file
diff --git a/Knots/Validators/Role/DeleteRoleDtoValidator.cs b/Knots/Validators/Role/DeleteRoleDtoValidator.cs
new file mode 100644
index 0000000..e7670d5
--- /dev/null
+++ b/Knots/Validators/Role/DeleteRoleDtoValidator.cs
@@ -0,0 +1,6 @@
+namespace Knots.Validators.Role;
+
+public class DeleteRoleDtoValidator
+{
+    
+}
\ No newline at end of file
diff --git a/Knots/Validators/Role/GetRoleDtoValidator.cs b/Knots/Validators/Role/GetRoleDtoValidator.cs
new file mode 100644
index 0000000..bd7b33d
--- /dev/null
+++ b/Knots/Validators/Role/GetRoleDtoValidator.cs
@@ -0,0 +1,6 @@
+namespace Knots.Validators.Role;
+
+public class GetRoleDtoValidator
+{
+    
+}
\ No newline at end of file
diff --git a/Knots/Validators/User/CreateUserDtoValidator.cs b/Knots/Validators/User/CreateUserDtoValidator.cs
new file mode 100644
index 0000000..ce0633e
--- /dev/null
+++ b/Knots/Validators/User/CreateUserDtoValidator.cs
@@ -0,0 +1,6 @@
+namespace Knots.Validators.User;
+
+public class CreateUserDtoValidator
+{
+    
+}
\ No newline at end of file
diff --git a/Knots/Validators/User/DeleteUserDtoValidator.cs b/Knots/Validators/User/DeleteUserDtoValidator.cs
new file mode 100644
index 0000000..1fa19a2
--- /dev/null
+++ b/Knots/Validators/User/DeleteUserDtoValidator.cs
@@ -0,0 +1,6 @@
+namespace Knots.Validators.User;
+
+public class DeleteUserDtoValidator
+{
+    
+}
\ No newline at end of file
diff --git a/Knots/Validators/User/GetUserDetailsDtoValidator.cs b/Knots/Validators/User/GetUserDetailsDtoValidator.cs
new file mode 100644
index 0000000..cd1b1f7
--- /dev/null
+++ b/Knots/Validators/User/GetUserDetailsDtoValidator.cs
@@ -0,0 +1,6 @@
+namespace Knots.Validators.User;
+
+public class GetUserDetailsDtoValidator
+{
+    
+}
\ No newline at end of file
diff --git a/Knots/Validators/User/GetUserDtoValidator.cs b/Knots/Validators/User/GetUserDtoValidator.cs
new file mode 100644
index 0000000..5ee1dc7
--- /dev/null
+++ b/Knots/Validators/User/GetUserDtoValidator.cs
@@ -0,0 +1,6 @@
+namespace Knots.Validators.User;
+
+public class GetUserDtoValidator
+{
+    
+}
\ No newline at end of file
diff --git a/Knots/Validators/User/UpdateUserDtoValidator.cs b/Knots/Validators/User/UpdateUserDtoValidator.cs
new file mode 100644
index 0000000..cc95957
--- /dev/null
+++ b/Knots/Validators/User/UpdateUserDtoValidator.cs
@@ -0,0 +1,6 @@
+namespace Knots.Validators.User;
+
+public class UpdateUserDtoValidator
+{
+    
+}
\ No newline at end of file