diff --git a/SecuritySystem/SecuritySystemBusinessLogic/BusinessLogics/ShopLogic.cs b/SecuritySystem/SecuritySystemBusinessLogic/BusinessLogics/ShopLogic.cs
index 5f8ad8b..178f78f 100644
--- a/SecuritySystem/SecuritySystemBusinessLogic/BusinessLogics/ShopLogic.cs
+++ b/SecuritySystem/SecuritySystemBusinessLogic/BusinessLogics/ShopLogic.cs
@@ -153,6 +153,11 @@ namespace SecuritySystemBusinessLogic.BusinessLogics
 
             _logger.LogInformation("Shop element found. ID: {0}, Name: {1}", shopElement.Id, shopElement.Name);
 
+            if (GetFreeSpace(shopElement.Id) < count)
+            {
+                throw new InvalidOperationException("В магазине не хватает места");
+            }
+
             if (shopElement.ShopSecures.TryGetValue(secure.Id, out var sameSecure))
             {
                 shopElement.ShopSecures[secure.Id] = (secure, sameSecure.Item2 + count);
@@ -176,34 +181,44 @@ namespace SecuritySystemBusinessLogic.BusinessLogics
 
             return true;
         }
-        public bool SupplySecures(ISecureModel secure, int count) => throw new NotImplementedException();
-        public bool SellSecures(ISecureModel model, int count) => throw new NotImplementedException();
-        public bool CheckSecuresCount(ISecureModel model, int count)
+        public bool SupplySecures(ISecureModel secure, int count)
         {
-            int securesInShops = _shopStorage.GetFullList()
-                .Select(x => x.ShopSecures.Select(y => y.Value.Item1.Id == model.Id ? y.Value.Item2 : 0).Sum()).Sum();
-            return securesInShops >= count;
-        }
-        public bool CheckSupplySecures(ShopSearchModel shopSearchModel, int count)
-        {
-            if (shopSearchModel == null)
-                throw new ArgumentNullException(nameof(shopSearchModel));
-
-            var shop = _shopStorage.GetElement(shopSearchModel);
-
-            if (shop == null)
+            if (!CheckSupplySecures(count))
             {
-                _logger.LogWarning("Required shop element not found in storage");
-                return false;
+                throw new InvalidOperationException("Невозможно пополнить: в магазинах не хватает места");
             }
 
-            int securesInShop = _shopStorage.GetFullList().Select(x => x.ShopSecures.Select(y => y.Value.Item2).Sum()).Sum();
+            var shops = _shopStorage.GetFullList();
+            foreach (var shop in shops)
+            {
+                int shopFreeSpace = GetFreeSpace(shop.Id);
+                if (shopFreeSpace > 0 && count > 0)
+                {
+                    int min = Math.Min(count, shopFreeSpace);
+                    count -= min;
+                    SupplySecures(new ShopSearchModel { Id = shop.Id }, secure, min);
+                }
+            }
 
-            return securesInShop + count <= shop.MaxSecuresCount;
+            return true;
+        }
+        public bool SellSecures(ISecureModel model, int count)
+        {
+            return _shopStorage.SellSecures(model, count);
         }
         public bool CheckSupplySecures(int count)
         {
-            throw new NotImplementedException();
+            return GetFreeSpace() >= count;
+        }
+        private int GetFreeSpace()
+        {
+            var shops = _shopStorage.GetFullList();
+            return shops.Select(shop => shop.MaxSecuresCount - shop.ShopSecures.Select(shopSecure => shopSecure.Value.Item2).Sum()).Sum();
+        }
+        private int GetFreeSpace(int shopId)
+        {
+            var shop = _shopStorage.GetElement(new ShopSearchModel { Id = shopId });
+            return shop.MaxSecuresCount - shop.ShopSecures.Select(shopSecure => shopSecure.Value.Item2).Sum();
         }
     }
 }
diff --git a/SecuritySystem/SecuritySystemContracts/BusinessLogicsContracts/IShopLogic.cs b/SecuritySystem/SecuritySystemContracts/BusinessLogicsContracts/IShopLogic.cs
index e4a6503..fc8c42b 100644
--- a/SecuritySystem/SecuritySystemContracts/BusinessLogicsContracts/IShopLogic.cs
+++ b/SecuritySystem/SecuritySystemContracts/BusinessLogicsContracts/IShopLogic.cs
@@ -17,14 +17,6 @@ namespace SecuritySystemContracts.BusinessLogicsContracts
         /// </summary>
         bool SellSecures(ISecureModel model, int count);
         /// <summary>
-        /// Проверяет наличие определенного количества продукта суммарно по всем магазинам
-        /// </summary>
-        bool CheckSecuresCount(ISecureModel model, int count);
-        /// <summary>
-        /// Проверяет можно ли пополнить конкретный магазин продукцией в указанном количестве
-        /// </summary>
-        bool CheckSupplySecures(ShopSearchModel shopSearchModel, int count);
-        /// <summary>
         /// Проверяет можно ли распределить во все магазины продукты в указанном количестве
         /// </summary>
         bool CheckSupplySecures(int count);