diff --git a/data/Repository/PresenceRepositoryImpl.cs b/data/Repository/PresenceRepositoryImpl.cs
index e9b0f5f..51030a7 100644
--- a/data/Repository/PresenceRepositoryImpl.cs
+++ b/data/Repository/PresenceRepositoryImpl.cs
@@ -40,6 +40,11 @@ namespace Demo.Data.Repository
             var allRecords = _remoteDatabaseContext.PresenceDaos.ToList();
             _remoteDatabaseContext.PresenceDaos.RemoveRange(allRecords);
             _remoteDatabaseContext.SaveChanges();
+
+            if (allRecords.Count == 0) {
+                return false;
+            }
+
             return true;
         }
 
@@ -51,26 +56,38 @@ namespace Demo.Data.Repository
             _remoteDatabaseContext.PresenceDaos.RemoveRange(delRecords);
             _remoteDatabaseContext.SaveChanges();
 
+            if (delRecords.Count == 0) {
+                return false;
+            }
+
             return true;
         }
 
         public bool DeletePresenceByGroup(int groupID) {
             var delRecords = _remoteDatabaseContext.PresenceDaos
-            .Where(y => y.userDAO.GroupID == groupID);
+            .Where(y => y.userDAO.GroupID == groupID).ToList();
 
             _remoteDatabaseContext.PresenceDaos.RemoveRange(delRecords);
             _remoteDatabaseContext.SaveChanges();
 
+            if (delRecords.Count == 0) {
+                return false;
+            }
+
             return true;
         }
 
         public bool DeletePresenceByDateRange(DateOnly startDate, DateOnly endDate) {
             var delRecords = _remoteDatabaseContext.PresenceDaos
-            .Where(x => x.Date >= startDate && x.Date <= endDate);
+            .Where(x => x.Date >= startDate && x.Date <= endDate).ToList();
 
             _remoteDatabaseContext.PresenceDaos.RemoveRange(delRecords);
             _remoteDatabaseContext.SaveChanges();
 
+            if (delRecords.Count == 0) {
+                return false;
+            }
+
             return true;
         }
 
diff --git a/presence_api/Controllers/AdminController.cs b/presence_api/Controllers/AdminController.cs
index c3a6061..cf442aa 100644
--- a/presence_api/Controllers/AdminController.cs
+++ b/presence_api/Controllers/AdminController.cs
@@ -11,10 +11,12 @@ public class AdminController: ControllerBase{
     private readonly GroupUseCase _groupUseCase;
     private readonly UserUseCase _userUseCase;
     private readonly PresenceUseCase _presenceUseCase;
-    public AdminController(GroupUseCase groupUseCase, UserUseCase userUseCase, PresenceUseCase presenceUseCase){
+    private readonly ILogger<AdminController> _logger;
+    public AdminController(GroupUseCase groupUseCase, UserUseCase userUseCase, PresenceUseCase presenceUseCase, ILogger<AdminController> logger){
     _groupUseCase = groupUseCase;
     _userUseCase = userUseCase;
     _presenceUseCase = presenceUseCase;
+    _logger = logger;
    }
 
     //post
@@ -23,6 +25,7 @@ public class AdminController: ControllerBase{
     {
         if (request == null || string.IsNullOrEmpty(request.GroupName))
         {
+            _logger.LogWarning("Invalid request");
             return BadRequest("Invalid request");
         }
 
@@ -40,10 +43,12 @@ public class AdminController: ControllerBase{
     [HttpDelete("user")]
     public ActionResult<bool> DeleteUser(Guid userGuid){
         if (userGuid == Guid.Empty){
+            _logger.LogWarning("Invalid request");
             return BadRequest("Invalid request");
         }
         bool isDeleted = _userUseCase.RemoveUserByGuid(userGuid);
         if (isDeleted == false){
+            _logger.LogWarning("User not found");
             return NotFound("User not found");
         }
         return Ok(true);
@@ -52,12 +57,14 @@ public class AdminController: ControllerBase{
     [HttpDelete("users")]
     public ActionResult<bool> DeleteUsers([FromBody] DeleteUsersRequest request){
         if (request == null){
+            _logger.LogWarning("Invalid request");
             return BadRequest("Invalid request");
         }
         foreach (Guid userGuid in request.UsersGuid)
         {
             bool isDeleted = _userUseCase.RemoveUserByGuid(userGuid);
             if (isDeleted == false){
+                _logger.LogWarning("User not found");
                 return NotFound("User not found");
             }
         }
@@ -68,6 +75,7 @@ public class AdminController: ControllerBase{
     public ActionResult<bool> DeleteGroup(int GroupID){
         bool isDeleted = _groupUseCase.RemoveGroupByID(GroupID);
         if (isDeleted == false){
+            _logger.LogWarning("Group not found");
             return NotFound("Group not found");
         }
         return Ok(true);
@@ -76,12 +84,14 @@ public class AdminController: ControllerBase{
     [HttpDelete("groups")]
     public ActionResult<bool> DeleteGroups([FromBody] DeleteGroupsRequest request){
         if (request == null){
+            _logger.LogWarning("Invalid request");
             return BadRequest("Invalid request");
         }
         foreach (int GroupID in request.GroupIDs)
         {
             bool isDeleted = _groupUseCase.RemoveGroupByID(GroupID);
             if (isDeleted == false){
+                _logger.LogWarning("Group not found");
                 return NotFound("Group not found");
             }
         }
@@ -107,6 +117,7 @@ public class AdminController: ControllerBase{
         if (user != null){
             return Ok(user);
         } else{
+            _logger.LogWarning("User not found");
             return NotFound("User not found");
         }
     }
diff --git a/presence_api/Controllers/PresenceController.cs b/presence_api/Controllers/PresenceController.cs
index 56ae8b2..4cba947 100644
--- a/presence_api/Controllers/PresenceController.cs
+++ b/presence_api/Controllers/PresenceController.cs
@@ -1,7 +1,6 @@
 using Demo.Domain.Models;
 using Demo.Domain.UseCase;
 using Microsoft.AspNetCore.Mvc;
-using Npgsql.TypeMapping;
 
 namespace presence_api.Controllers;
 [ApiController]
@@ -10,10 +9,12 @@ namespace presence_api.Controllers;
 public class PresenceController: ControllerBase{
 
     private readonly PresenceUseCase _presenceUseCase;
+    private readonly ILogger<PresenceController> _logger;
 
-    public PresenceController(PresenceUseCase presenceUseCase){
+    public PresenceController(PresenceUseCase presenceUseCase, ILogger<PresenceController> logger){
 
     _presenceUseCase = presenceUseCase;
+    _logger = logger;
 
     }
 
@@ -22,6 +23,7 @@ public class PresenceController: ControllerBase{
 
         if (!DateOnly.TryParse(date, out var parseDate))
         {
+            _logger.LogWarning("Invalid date format");
             return BadRequest("Invalid date format");
         }
 
@@ -48,11 +50,13 @@ public class PresenceController: ControllerBase{
     public ActionResult<bool> DeletePresenceByUserGuid(Guid userGuid)
     {
         if (userGuid == Guid.Empty){
+            _logger.LogWarning("Invalid Guid");
             return BadRequest("Invalid request");
         }
 
         var isDeleted = _presenceUseCase.DeletePresenceByUser(userGuid);
         if (isDeleted == false){
+            _logger.LogWarning("User not found");
             return NotFound("User not found");
         }
         return Ok(true);
@@ -63,6 +67,7 @@ public class PresenceController: ControllerBase{
     {
         var isDeleted = _presenceUseCase.DeletePresenceByGroup(groupID);
         if (isDeleted == false){
+            _logger.LogWarning("Group not found");
             return NotFound("Group not found");
         }
         return Ok(true);
@@ -74,11 +79,13 @@ public class PresenceController: ControllerBase{
         if (!DateOnly.TryParse(startDate, out var parsedStartDate) || 
             !DateOnly.TryParse(endDate, out var parsedEndDate))
         {
+            _logger.LogWarning("Invalid date format");
             return BadRequest("Invalid date format");
         }
 
         var isDeleted = _presenceUseCase.DeletePresenceByDateRange(parsedStartDate, parsedEndDate);
         if (isDeleted == false){
+            _logger.LogWarning("Presence not found");
             return NotFound("Presence not found");
         }
 
@@ -90,15 +97,16 @@ public class PresenceController: ControllerBase{
     {
         if (!DateOnly.TryParse(date, out var parseDate))
         {
+            _logger.LogWarning("Invalid date format");
             return BadRequest("Invalid date format");
         }
 
         var isUpdated = _presenceUseCase.IsAttedance(firstLesson, lastLesson, parseDate, UserGuid);
         if (isUpdated == false){
+            _logger.LogWarning("Presence not found");
             return NotFound("Presence not found");
         }
 
         return Ok(true);
     }
-
 }
\ No newline at end of file