diff --git a/AsbCloudApp/Data/User/ContactDto.cs b/AsbCloudApp/Data/User/ContactDto.cs
index dd6b3212..8445d801 100644
--- a/AsbCloudApp/Data/User/ContactDto.cs
+++ b/AsbCloudApp/Data/User/ContactDto.cs
@@ -35,7 +35,7 @@ public class ContactDto : IId
     /// <summary>
     /// Email
     /// </summary>
-    [RegularExpression(@"^([a-zA-Z0-9_\-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([a-zA-Z0-9\-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$", ErrorMessage = "Некорректный email")]
+    [RegularExpression(@"^[a-zA-Z0-9_\-\.]{3,128}@[a-zA-Z0-9_\-\.]{2,128}\.[a-zA-Z]{1,32}$", ErrorMessage = "Некорректный email")]
     public string? Email { get; set; }
 
     /// <summary>
diff --git a/AsbCloudInfrastructure/Repository/ChangeLogRepositoryAbstract.cs b/AsbCloudInfrastructure/Repository/ChangeLogRepositoryAbstract.cs
index 157b204d..c47ebd05 100644
--- a/AsbCloudInfrastructure/Repository/ChangeLogRepositoryAbstract.cs
+++ b/AsbCloudInfrastructure/Repository/ChangeLogRepositoryAbstract.cs
@@ -117,6 +117,22 @@ public abstract class ChangeLogRepositoryAbstract<TEntity, TDto, TRequest> : ICh
     }
 
     public async Task<int> InsertRange(int idUser, IEnumerable<TDto> dtos, CancellationToken token)
+    {
+        using var transaction = db.Database.BeginTransaction();
+        try
+        {
+            var result = await InsertRangeWithoutTransaction(idUser, dtos, token);
+            await transaction.CommitAsync(token);
+            return result;
+        }
+        catch
+        {
+            await transaction.RollbackAsync(token);
+            throw;
+        }
+    }
+
+    private async Task<int> InsertRangeWithoutTransaction(int idUser, IEnumerable<TDto> dtos, CancellationToken token)
     {
         var result = 0;
         if (dtos.Any())
@@ -138,7 +154,8 @@ public abstract class ChangeLogRepositoryAbstract<TEntity, TDto, TRequest> : ICh
 
             result += await SaveChangesWithExceptionHandling(token);
         }
-        return result;
+
+        return result;       
     }
 
     public async Task<int> UpdateRange(int idUser, IEnumerable<TDto> dtos, CancellationToken token)
@@ -248,7 +265,7 @@ public abstract class ChangeLogRepositoryAbstract<TEntity, TDto, TRequest> : ICh
         try
         {
             result += await Clear(idUser, request, token);
-            result += await InsertRange(idUser, dtos, token);
+            result += await InsertRangeWithoutTransaction(idUser, dtos, token);
 
             await transaction.CommitAsync(token);
             return result;