Entity Framework code-first error when using stored procedure with fields that have default value

I need to use a stored method to insert an entity. There is a column in the database table calledCreateDateTime whose default value isGetDate() .

I refuse to permit the stored process to set or updateCreateDateTime column.

If I dial thedbcontext.SaveChanges() However, after inserting a record and calling my stored method, EF raises the following error:

A function mapping specifies a result column 'CreateDateTime' that the result set does not contain.

My DbContext the following belong to class:

modelBuilder  
    .Entity<Test>()  
    .MapToStoredProcedures(s =>  
        s.Update(u => u.HasName("TestUpdate"))  
        .Delete(d => d.HasName("TestDelete"))  
        .Insert(i => i.HasName("TestInsert")));

The TestInsert An easy stored procedure isINSERT INTO... SELECT SCOPE_IDENTITY()

On myTest class I possess the following asset.

[DatabaseGenerated(DatabaseGeneratedOption.Computed)]
public DateTime CreateDateTime { get; set; }