// Add this ViewModel class to your Models/ViewModels folder using System.ComponentModel.DataAnnotations; namespace ODCWeb.Models.ViewModels { public class DuplicateTemplateViewModel { public int OriginalTemplateId { get; set; } [Required(ErrorMessage = "Template name is required")] [StringLength(100, ErrorMessage = "Template name cannot be longer than 100 characters")] [Display(Name = "New Template Name")] public string NewTemplateName { get; set; } } }