diff --git a/University/UniversityBusinessLogics/BusinessLogic/EmployeeLogic.cs b/University/UniversityBusinessLogics/BusinessLogic/EmployeeLogic.cs
index 0780282..1440053 100644
--- a/University/UniversityBusinessLogics/BusinessLogic/EmployeeLogic.cs
+++ b/University/UniversityBusinessLogics/BusinessLogic/EmployeeLogic.cs
@@ -5,6 +5,7 @@ using System.Text;
 using System.Threading.Tasks;
 using UniversityContracts.BindingModels;
 using UniversityContracts.BusinessLogicContracts;
+using UniversityContracts.SearchModels;
 using UniversityContracts.StoragesContracts;
 
 namespace UniversityBusinessLogics.BusinessLogic
@@ -29,18 +30,14 @@ namespace UniversityBusinessLogics.BusinessLogic
             {
                 return;
             }
-            if (string.IsNullOrEmpty(model.PhoneNumber))
+            if (string.IsNullOrEmpty(model.Login))
             {
-                throw new ArgumentNullException(nameof(model.PhoneNumber), "Нет логина клиента");
+                throw new ArgumentNullException(nameof(model.Login), "Нет логина клиента");
             }
             if (string.IsNullOrEmpty(model.Password))
             {
                 throw new ArgumentNullException(nameof(model.Password), "Нет пароля клиента");
             }
-            if (model.PhoneNumber.Length is < 12)
-            {
-                throw new ArgumentException(nameof(model.PhoneNumber), "Длина номера телефона должна быть 11 цифр");
-            }
 
             if (model.Password.Length < 5)
             {
diff --git a/University/UniversityBusinessLogics/BusinessLogic/PaymentLogic.cs b/University/UniversityBusinessLogics/BusinessLogic/PaymentLogic.cs
index aad9296..a70d0e5 100644
--- a/University/UniversityBusinessLogics/BusinessLogic/PaymentLogic.cs
+++ b/University/UniversityBusinessLogics/BusinessLogic/PaymentLogic.cs
@@ -3,6 +3,8 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using UniversityContracts.BusinessLogicContracts;
+using UniversityContracts.StoragesContracts;
 
 namespace UniversityBusinessLogics.BusinessLogic
 {
@@ -10,8 +12,8 @@ namespace UniversityBusinessLogics.BusinessLogic
     {
         private readonly ILogger _logger;
         private readonly IPaymentStorage _paymentStorage;
-        private readonly IOperationStorage _carStorage;
-        public PaymentLogic(ILogger<PaymentLogic> logger, IPaymentStorage paymentStorage, IOperationStorage carStorage)
+        private readonly IClassStorage _carStorage;
+        public PaymentLogic(ILogger<PaymentLogic> logger, IPaymentStorage paymentStorage, IClassStorage carStorage)
         {
             _logger = logger;
             _paymentStorage = paymentStorage;
diff --git a/University/UniversityBusinessLogics/BusinessLogic/PurchaseLogic.cs b/University/UniversityBusinessLogics/BusinessLogic/PurchaseLogic.cs
index c9ee846..a136aa6 100644
--- a/University/UniversityBusinessLogics/BusinessLogic/PurchaseLogic.cs
+++ b/University/UniversityBusinessLogics/BusinessLogic/PurchaseLogic.cs
@@ -3,6 +3,11 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
+using UniversityContracts.BindingModels;
+using UniversityContracts.BusinessLogicContracts;
+using UniversityContracts.SearchModels;
+using UniversityContracts.StoragesContracts;
+using UniversityContracts.ViewModels;
 
 namespace UniversityBusinessLogics.BusinessLogic
 {
diff --git a/University/UniversityContracts/Class1.cs b/University/UniversityContracts/Class1.cs
deleted file mode 100644
index 6e62b72..0000000
--- a/University/UniversityContracts/Class1.cs
+++ /dev/null
@@ -1,7 +0,0 @@
-namespace UniversityContracts
-{
-    public class Class1
-    {
-
-    }
-}