diff --git a/DoubleDeckerBus/DoubleDeckerBus/BusNotFoundException.cs b/DoubleDeckerBus/DoubleDeckerBus/BusNotFoundException.cs
new file mode 100644
index 0000000..3757dac
--- /dev/null
+++ b/DoubleDeckerBus/DoubleDeckerBus/BusNotFoundException.cs
@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.Serialization;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DoubleDeckerBus
+{
+    [Serializable]
+    internal class BusNotFoundException : ApplicationException
+    {
+        public BusNotFoundException(int i) : base($"Не найден объект по позиции {i}") { }
+        public BusNotFoundException() : base() { }
+        public BusNotFoundException(string message) : base(message) { }
+        public BusNotFoundException(string message, Exception exception) : base(message, exception) { }
+        protected BusNotFoundException(SerializationInfo info, StreamingContext contex) : base(info, contex) { }
+    }
+}
diff --git a/DoubleDeckerBus/DoubleDeckerBus/FormMapWithSetBuses.cs b/DoubleDeckerBus/DoubleDeckerBus/FormMapWithSetBuses.cs
index 9b404cb..f02e109 100644
--- a/DoubleDeckerBus/DoubleDeckerBus/FormMapWithSetBuses.cs
+++ b/DoubleDeckerBus/DoubleDeckerBus/FormMapWithSetBuses.cs
@@ -88,15 +88,27 @@ namespace DoubleDeckerBus
                 return;
             }
             int pos = Convert.ToInt32(maskedTextBoxPosition.Text);
-            if (_mapsCollection[listBoxMaps.SelectedItem?.ToString() ?? string.Empty] - pos != null)
+            try
             {
-                MessageBox.Show("Объект удален");
-                pictureBox.Image = _mapsCollection[listBoxMaps.SelectedItem?.ToString() ?? string.Empty].ShowSet();
+                if (_mapsCollection[listBoxMaps.SelectedItem?.ToString() ?? string.Empty] - pos != null)
+                {
+                    MessageBox.Show("Объект удален");
+                    pictureBox.Image = _mapsCollection[listBoxMaps.SelectedItem?.ToString() ?? string.Empty].ShowSet();
+                }
+                else
+                {
+                    MessageBox.Show("Не удалось удалить объект");
+                }
             }
-            else
+            catch (BusNotFoundException ex)
             {
-                MessageBox.Show("Не удалось удалить объект");
+                MessageBox.Show($"Ошибка удаления: {ex.Message}");
             }
+            catch (Exception ex)
+            {
+                MessageBox.Show($"Неизветсная шибка: {ex.Message}");
+            }
+            
         }
 
         private void ButtonShowStorage_Click(object sender, EventArgs e)
@@ -183,13 +195,13 @@ namespace DoubleDeckerBus
         {
             if (saveFileDialog.ShowDialog() == DialogResult.OK)
             {
-                if (_mapsCollection.SaveData(saveFileDialog.FileName))
+                try
                 {
+                    _mapsCollection.SaveData(saveFileDialog.FileName);
                     MessageBox.Show("Сохранение прошло успешно", "Результат", MessageBoxButtons.OK, MessageBoxIcon.Information);
                 }
-                else
-                {
-                    MessageBox.Show("Не сохранилось", "Результат", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                catch (Exception ex) {
+                    MessageBox.Show($"Не сохранилось: {ex.Message}", "Результат", MessageBoxButtons.OK, MessageBoxIcon.Error);
                 }
             }
         }
@@ -198,13 +210,14 @@ namespace DoubleDeckerBus
         {
             if (openFileDialog.ShowDialog() == DialogResult.OK)
             {
-                if (_mapsCollection.LoadData(openFileDialog.FileName))
-                {
+                try {
+                    _mapsCollection.LoadData(openFileDialog.FileName);
                     MessageBox.Show("Загрузка прошло успешно", "Результат", MessageBoxButtons.OK, MessageBoxIcon.Information);
                     ReloadMaps();
                 }
-                else {
-                    MessageBox.Show("Ошибка при загрузке", "Результат", MessageBoxButtons.OK, MessageBoxIcon.Error);
+                catch (Exception ex)
+                { 
+                    MessageBox.Show($"Ошибка при загрузке: {ex.Message}", "Результат", MessageBoxButtons.OK, MessageBoxIcon.Error);
                 }
             }
         }
diff --git a/DoubleDeckerBus/DoubleDeckerBus/MapsCollection.cs b/DoubleDeckerBus/DoubleDeckerBus/MapsCollection.cs
index 5642947..c7e70e2 100644
--- a/DoubleDeckerBus/DoubleDeckerBus/MapsCollection.cs
+++ b/DoubleDeckerBus/DoubleDeckerBus/MapsCollection.cs
@@ -51,7 +51,7 @@ namespace DoubleDeckerBus
             stream.Write(info, 0, info.Length);
         }
 
-        public bool SaveData(string filename)
+        public void SaveData(string filename)
         {
             if (File.Exists(filename))
             {
@@ -65,14 +65,13 @@ namespace DoubleDeckerBus
                     sw.Write($"{storage.Key}{separatorDict}{storage.Value.GetData(separatorDict, separatorData)}{Environment.NewLine}");
                 }
             }
-            return true;
         }
 
-        public bool LoadData(string filename)
+        public void LoadData(string filename)
         {
             if (!File.Exists(filename))
             {
-                return false;
+                throw new Exception("Файл не найден");
             }
             string line;
             using (StreamReader sw = new(filename))
@@ -80,7 +79,7 @@ namespace DoubleDeckerBus
                 line = sw.ReadLine();
                 if (line == null || !line.Contains("MapsCollection"))
                 {
-                    return false;
+                    throw new Exception("Формат данных в файле не совпадает");
                 }
 
                 _mapStorages.Clear();
@@ -102,8 +101,6 @@ namespace DoubleDeckerBus
                     _mapStorages[elem[0]].LoadData(elem[2].Split(separatorData, StringSplitOptions.RemoveEmptyEntries));
                     line = sw.ReadLine();
                 }
-
-                return true;
             }
         }
     }
diff --git a/DoubleDeckerBus/DoubleDeckerBus/SetBusesGeneric.cs b/DoubleDeckerBus/DoubleDeckerBus/SetBusesGeneric.cs
index 1da17a2..00927bc 100644
--- a/DoubleDeckerBus/DoubleDeckerBus/SetBusesGeneric.cs
+++ b/DoubleDeckerBus/DoubleDeckerBus/SetBusesGeneric.cs
@@ -28,9 +28,12 @@ namespace DoubleDeckerBus
         }
 
         public int Insert(T bus, int position)
-        {
+        {   
+            // TODO проверка на _maxCount
             if (position < 0 || position >= _maxCount || BusyPlaces == _maxCount) return -1;
 
+            // TODO проверка позиции
+
             BusyPlaces++;
             _places.Insert(position, bus);
             return position;
@@ -38,6 +41,7 @@ namespace DoubleDeckerBus
 
         public T Remove(int position)
         {
+            // TODO проверка позиции
             if (position < 0 || position >= _maxCount) return null;
             T savedBus = _places[position];
             _places.RemoveAt(position);
diff --git a/DoubleDeckerBus/DoubleDeckerBus/StorageOverFlowException.cs b/DoubleDeckerBus/DoubleDeckerBus/StorageOverFlowException.cs
new file mode 100644
index 0000000..1e6d319
--- /dev/null
+++ b/DoubleDeckerBus/DoubleDeckerBus/StorageOverFlowException.cs
@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Runtime.Serialization;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace DoubleDeckerBus
+{
+    [Serializable]
+    internal class StorageOverflowException : ApplicationException
+    {
+        public StorageOverflowException(int count) : base($"В наборе превышено допустимое количество: {count}") { }
+        public StorageOverflowException() : base() { }
+        public StorageOverflowException(string message) : base(message) { }
+        public StorageOverflowException(string message, Exception exception) : base(message, exception) { }
+        protected StorageOverflowException(SerializationInfo info, StreamingContext contex) : base(info, contex) { }
+    }
+}