diff --git a/LawFirm/LawFirmBusinessLogic/BusinessLogics/ShopLogic.cs b/LawFirm/LawFirmBusinessLogic/BusinessLogics/ShopLogic.cs
new file mode 100644
index 0000000..b5de351
--- /dev/null
+++ b/LawFirm/LawFirmBusinessLogic/BusinessLogics/ShopLogic.cs
@@ -0,0 +1,168 @@
+using LawFirmContracts.BindingModels;
+using LawFirmContracts.BusinessLogicContracts;
+using LawFirmContracts.SearchModels;
+using LawFirmContracts.StorageContracts;
+using LawFirmContracts.ViewModels;
+using LawFirmDataModels.Models;
+using Microsoft.Extensions.Logging;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Xml.Linq;
+
+namespace LawFirmBusinessLogic.BusinessLogics
+{
+    public class ShopLogic : IShopLogic
+    {
+        private readonly ILogger _logger;
+        private readonly IShopStorage _shopStorage;
+
+        public ShopLogic(ILogger<ShopLogic> logger, IShopStorage shopStorage)
+        {
+            _logger = logger;
+            _shopStorage = shopStorage;
+        }
+
+        public ShopViewModel? ReadElement(ShopSearchModel model)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+            _logger.LogInformation("ReadElement. Shop Name:{0}.ID:{1}", model.Name, model.Id);
+            var element = _shopStorage.GetElement(model);
+            if (element == null)
+            {
+                _logger.LogWarning("ReadElement element not found");
+                return null;
+            }
+            _logger.LogInformation("ReadElement find. Id:{Id}", element.Id);
+            return element;
+        }
+
+        public List<ShopViewModel>? ReadList(ShopSearchModel? model)
+        {
+            _logger.LogInformation("ReadList. Shop Name:{0}.ID:{1} ", model?.Name, model?.Id);
+
+            var list = (model == null) ? _shopStorage.GetFullList() : _shopStorage.GetFilteredList(model);
+
+            if (list == null)
+            {
+                _logger.LogWarning("ReadList return null list");
+                return null;
+            }
+            _logger.LogInformation("ReadList. Count:{Count}", list.Count);
+            return list;
+        }
+
+        public bool SupplyDocuments(ShopSearchModel model, IDocumentModel document, int count)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            if (document == null)
+            {
+                throw new ArgumentNullException(nameof(document));
+            }
+
+            if (count <= 0)
+            {
+                throw new ArgumentNullException("Count of documents in supply myst be more than 0", nameof(count));
+            }
+
+            var shopElement = _shopStorage.GetElement(model);
+            if (shopElement == null) 
+            {
+                _logger.LogWarning("Required shop element not found in storage");
+                return false;
+            }
+            _logger.LogInformation("Shop element found. ID: {0}, Name: {1}", shopElement.Id, shopElement.Name);
+
+            if (shopElement.ShopDocuments.TryGetValue(document.Id, out var sameDocument))
+            {
+                shopElement.ShopDocuments[document.Id] = (document, sameDocument.Item2 + count);
+                _logger.LogInformation("Same document found by supply. Added {0} of {1} in {2} shop", count, document.DocumentName, shopElement.Name);
+            }
+            else
+            {
+                shopElement.ShopDocuments[document.Id] = (document, count);
+                _logger.LogInformation("New document added by supply. Added {0} of {1} in {2} shop", count, document.DocumentName, shopElement.Name);
+            }
+
+            _shopStorage.Update(new()
+            {
+                Id = shopElement.Id,
+                Name = shopElement.Name,
+                Adress = shopElement.Adress,
+                OpeningDate = shopElement.OpeningDate,
+                ShopDocuments = shopElement.ShopDocuments
+            });
+
+            return true;
+        }
+
+        public bool Create(ShopBindingModel model)
+        {
+            CheckModel(model);
+            if (_shopStorage.Insert(model) == null)
+            {
+                _logger.LogWarning("Insert operation failed");
+                return false;
+            }
+
+            return true;
+        }
+
+        public bool Update(ShopBindingModel model)
+        {
+            CheckModel(model);
+            if (_shopStorage.Update(model) == null)
+            {
+                _logger.LogWarning("Update operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        public bool Delete(ShopBindingModel model)
+        {
+            CheckModel(model, false);
+            if (_shopStorage.Delete(model) == null)
+            {
+                _logger.LogWarning("Delete operation failed");
+                return false;
+            }
+            return true;
+        }
+
+        private void CheckModel(ShopBindingModel model, bool withParams = true)
+        {
+            if (model == null)
+            {
+                throw new ArgumentNullException(nameof(model));
+            }
+
+            if (!withParams)
+            {
+                return;
+            }
+            if (string.IsNullOrEmpty(model.Name))
+            {
+                throw new ArgumentNullException("Нет названия магазина!", nameof(model.Name));
+            }
+            _logger.LogInformation("Shop. Name: {0}, Adress: {1}, ID: {2}", model.Name, model.Adress, model.Id);
+            var element = _shopStorage.GetElement(new ShopSearchModel
+            {
+                Name = model.Name
+            });
+            if (element != null && element.Id != model.Id)
+            {
+                throw new InvalidOperationException("Магазин с таким названием уже есть");
+            }
+        }
+    }
+}
diff --git a/LawFirm/LawFirmContracts/BusinessLogicContracts/IShopLogic.cs b/LawFirm/LawFirmContracts/BusinessLogicContracts/IShopLogic.cs
index 257f5dc..0b47a27 100644
--- a/LawFirm/LawFirmContracts/BusinessLogicContracts/IShopLogic.cs
+++ b/LawFirm/LawFirmContracts/BusinessLogicContracts/IShopLogic.cs
@@ -13,7 +13,7 @@ namespace LawFirmContracts.BusinessLogicContracts
     public interface IShopLogic
     {
         ShopViewModel? ReadElement(ShopSearchModel model);
-        List<ShopViewModel> ReadList(ShopSearchModel? model);
+        List<ShopViewModel>? ReadList(ShopSearchModel? model);
         bool Create(ShopBindingModel model);
         bool Update(ShopBindingModel model);
         bool Delete(ShopBindingModel model);