diff --git a/DigitalData.UserManager.Application/DIExtensions.cs b/DigitalData.UserManager.Application/DIExtensions.cs
index 253dd74..518e517 100644
--- a/DigitalData.UserManager.Application/DIExtensions.cs
+++ b/DigitalData.UserManager.Application/DIExtensions.cs
@@ -16,6 +16,7 @@ namespace DigitalData.UserManager.Application
         /// <typeparam name="TDbContext">The type of the DbContext to use for the repositories.</typeparam>
         /// <param name="services">The IServiceCollection to which the services will be added.</param>
         /// <returns>The updated IServiceCollection.</returns>
+        [Obsolete("Use MediatR")]
         public static IServiceCollection AddUserManagerApplication(this IServiceCollection services)
             => services
             .AddAutoMapper(typeof(UserMappingProfile).Assembly)
diff --git a/DigitalData.UserManager.Application/DTOs/Group/GroupReadDto.cs b/DigitalData.UserManager.Application/DTOs/Group/GroupReadDto.cs
index 1e338c2..1e9969a 100644
--- a/DigitalData.UserManager.Application/DTOs/Group/GroupReadDto.cs
+++ b/DigitalData.UserManager.Application/DTOs/Group/GroupReadDto.cs
@@ -2,6 +2,7 @@
 
 namespace DigitalData.UserManager.Application.DTOs.Group
 {
+    [Obsolete("Use DigitalData.Core.Exceptions and .Middleware")]
     public record GroupReadDto
     (
         int Id,
diff --git a/DigitalData.UserManager.Application/DTOs/GroupOfUser/GroupOfUserReadDto.cs b/DigitalData.UserManager.Application/DTOs/GroupOfUser/GroupOfUserReadDto.cs
index 7d99a3f..36ff487 100644
--- a/DigitalData.UserManager.Application/DTOs/GroupOfUser/GroupOfUserReadDto.cs
+++ b/DigitalData.UserManager.Application/DTOs/GroupOfUser/GroupOfUserReadDto.cs
@@ -4,6 +4,7 @@ using DigitalData.UserManager.Application.DTOs.User;
 
 namespace DigitalData.UserManager.Application.DTOs.GroupOfUser
 {
+    [Obsolete("Use DigitalData.Core.Exceptions and .Middleware")]
     public record GroupOfUserReadDto(
         int Id,
         int UserId,
diff --git a/DigitalData.UserManager.Application/DTOs/UserRep/UserRepReadDto.cs b/DigitalData.UserManager.Application/DTOs/UserRep/UserRepReadDto.cs
index 603dc94..6d37328 100644
--- a/DigitalData.UserManager.Application/DTOs/UserRep/UserRepReadDto.cs
+++ b/DigitalData.UserManager.Application/DTOs/UserRep/UserRepReadDto.cs
@@ -4,6 +4,7 @@ using DigitalData.UserManager.Application.DTOs.User;
 
 namespace DigitalData.UserManager.Application.DTOs.UserRep
 {
+    [Obsolete("Use DigitalData.Core.Exceptions and .Middleware")]
     public record UserRepReadDto(
         int Id,
         int? UserId,
diff --git a/DigitalData.UserManager.Infrastructure/DependencyInjection.cs b/DigitalData.UserManager.Infrastructure/DependencyInjection.cs
index ea7a4f5..c1059d8 100644
--- a/DigitalData.UserManager.Infrastructure/DependencyInjection.cs
+++ b/DigitalData.UserManager.Infrastructure/DependencyInjection.cs
@@ -16,6 +16,7 @@ public static class DependencyInjection
     /// <typeparam name="TDbContext">The type of the DbContext to use for the repositories.</typeparam>
     /// <param name="services">The IServiceCollection to which the services will be added.</param>
     /// <returns>The updated IServiceCollection.</returns>
+    [Obsolete("Use IRepository")]
     public static IServiceCollection AddUserManagerInfrastructure<TDbContext>(this IServiceCollection services)
             where TDbContext : DbContext, IUserManagerDbContext
     {
diff --git a/DigitalData.UserManager.Infrastructure/Repositories/GroupRepository.cs b/DigitalData.UserManager.Infrastructure/Repositories/GroupRepository.cs
index 349862c..a0871c2 100644
--- a/DigitalData.UserManager.Infrastructure/Repositories/GroupRepository.cs
+++ b/DigitalData.UserManager.Infrastructure/Repositories/GroupRepository.cs
@@ -6,6 +6,7 @@ using Microsoft.EntityFrameworkCore;
 
 namespace DigitalData.UserManager.Infrastructure.Repositories
 {
+    [Obsolete("Use Repository")]
     public class GroupRepository<TDbContext> : CRUDRepository<Group, int, TDbContext>, IGroupRepository
         where TDbContext : DbContext, IUserManagerDbContext
     {
diff --git a/DigitalData.UserManager.Infrastructure/Repositories/ModuleOfUserRepository.cs b/DigitalData.UserManager.Infrastructure/Repositories/ModuleOfUserRepository.cs
index dab5324..33eb8a0 100644
--- a/DigitalData.UserManager.Infrastructure/Repositories/ModuleOfUserRepository.cs
+++ b/DigitalData.UserManager.Infrastructure/Repositories/ModuleOfUserRepository.cs
@@ -6,6 +6,7 @@ using Microsoft.EntityFrameworkCore;
 
 namespace DigitalData.UserManager.Infrastructure.Repositories;
 
+[Obsolete("Use Repository")]
 public class ModuleOfUserRepository<TDbContext> : CRUDRepository<ModuleOfUser, int, TDbContext>, IModuleOfUserRepository
     where TDbContext : DbContext, IUserManagerDbContext
 {
diff --git a/DigitalData.UserManager.Infrastructure/Repositories/UserRepRepository.cs b/DigitalData.UserManager.Infrastructure/Repositories/UserRepRepository.cs
index b950fdb..36a6df3 100644
--- a/DigitalData.UserManager.Infrastructure/Repositories/UserRepRepository.cs
+++ b/DigitalData.UserManager.Infrastructure/Repositories/UserRepRepository.cs
@@ -6,6 +6,7 @@ using Microsoft.EntityFrameworkCore;
 
 namespace DigitalData.UserManager.Infrastructure.Repositories;
 
+[Obsolete("Use Repository")]
 public class UserRepRepository<TDbContext> : CRUDRepository<UserRep, int, TDbContext>, IUserRepRepository
     where TDbContext : DbContext, IUserManagerDbContext
 {
diff --git a/DigitalData.UserManager.Infrastructure/Repositories/UserRepository.cs b/DigitalData.UserManager.Infrastructure/Repositories/UserRepository.cs
index 14baa05..34ae1b7 100644
--- a/DigitalData.UserManager.Infrastructure/Repositories/UserRepository.cs
+++ b/DigitalData.UserManager.Infrastructure/Repositories/UserRepository.cs
@@ -6,6 +6,7 @@ using Microsoft.EntityFrameworkCore;
 
 namespace DigitalData.UserManager.Infrastructure.Repositories
 {
+    [Obsolete("Use Repository")]
     public class UserRepository<TDbContext> : CRUDRepository<User, int, TDbContext>, IUserRepository
         where TDbContext : DbContext, IUserManagerDbContext
     {