diff --git a/FishFactoryBusinessLogic/BusinessLogic/OrderLogic.cs b/FishFactoryBusinessLogic/BusinessLogic/OrderLogic.cs
index 52e6f46..fb61b4e 100644
--- a/FishFactoryBusinessLogic/BusinessLogic/OrderLogic.cs
+++ b/FishFactoryBusinessLogic/BusinessLogic/OrderLogic.cs
@@ -94,15 +94,21 @@ namespace FishFactoryBusinessLogic.BusinessLogic
                 throw new ArgumentNullException(nameof(element));
             }
 
-            model.CannedId = element.CannedId;
+			if (element.ImplementerId != null && model.ImplementerId != null && model.ImplementerId != element.ImplementerId)
+			{
+				throw new InvalidOperationException(nameof(model.ImplementerId));
+			}
+
+			model.CannedId = element.CannedId;
             model.ClientId = element.ClientId;
             model.DateCreate = element.DateCreate;
             model.DateImplement = element.DateImplement;
             model.Status = element.Status;
             model.Count = element.Count;
             model.Sum = element.Sum;
+			model.ImplementerId = element.ImplementerId.HasValue ? element.ImplementerId : model.ImplementerId;
 
-            if (model.Status != orderStatus - 1)
+			if (model.Status != orderStatus - 1)
             {
                 _logger.LogWarning("Status update to " + orderStatus + " operation failed");
                 return false;
diff --git a/FishFactoryContracts/SearchModels/ImplementerSearchModel.cs b/FishFactoryContracts/SearchModels/ImplementerSearchModel.cs
index be9c97f..2420ab5 100644
--- a/FishFactoryContracts/SearchModels/ImplementerSearchModel.cs
+++ b/FishFactoryContracts/SearchModels/ImplementerSearchModel.cs
@@ -4,7 +4,7 @@ namespace FishFactoryContracts.SearchModels
     public class ImplementerSearchModel
     {
         public int? Id { get; set; }
-        public string? ImplementerFIO { get; set; }
-        public string? Password { get; set; }
-    }
+        public string? ImplementerFIO { get; set; } = string.Empty;
+		public string? Password { get; set; } = string.Empty;
+	}
 }
diff --git a/FishFactoryContracts/ViewModels/ImplementerViewModel.cs b/FishFactoryContracts/ViewModels/ImplementerViewModel.cs
index ceaae40..6c8008a 100644
--- a/FishFactoryContracts/ViewModels/ImplementerViewModel.cs
+++ b/FishFactoryContracts/ViewModels/ImplementerViewModel.cs
@@ -1,9 +1,9 @@
-
+using FishFactoryDataModel.Models;
 using System.ComponentModel;
 
 namespace FishFactoryContracts.ViewModels
 {
-    public class ImplementerViewModel
+    public class ImplementerViewModel : IImplementerModel
     {
         public int Id { get; set; }
         [DisplayName("ФИО исполнителя")]
diff --git a/FishFactoryDatabaseImplement/Models/Implementer.cs b/FishFactoryDatabaseImplement/Models/Implementer.cs
index f68ae31..dd3193e 100644
--- a/FishFactoryDatabaseImplement/Models/Implementer.cs
+++ b/FishFactoryDatabaseImplement/Models/Implementer.cs
@@ -1,6 +1,7 @@
 using FishFactoryContracts.BindingModels;
 using FishFactoryContracts.ViewModels;
 using FishFactoryDataModel.Models;
+using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
 
 namespace FishFactoryDatabaseImplement.Models
@@ -8,14 +9,14 @@ namespace FishFactoryDatabaseImplement.Models
     public class Implementer : IImplementerModel
     {
         public int Id { get; private set; }
-
-        public string ImplementerFIO { get; private set; } = string.Empty;
-
-        public string Password { get; private set; } = string.Empty;
-
-        public int WorkExperience { get; private set; } = 0;
-
-        public int Qualification { get; private set; } = 0;
+        [Required]
+		public string ImplementerFIO { get; private set; } = string.Empty;
+		[Required]
+		public string Password { get; private set; } = string.Empty;
+		[Required]
+		public int WorkExperience { get; private set; } = 0;
+		[Required]
+		public int Qualification { get; private set; } = 0;
 		[ForeignKey("ImplementerId")]
         public virtual List<Order> Order { get; set; } = new();