diff --git a/NorthwindCRUD/Models/Dtos/AddressDto.cs b/NorthwindCRUD/Models/Dtos/AddressDto.cs
index 9713165..10bc810 100644
--- a/NorthwindCRUD/Models/Dtos/AddressDto.cs
+++ b/NorthwindCRUD/Models/Dtos/AddressDto.cs
@@ -5,15 +5,19 @@ namespace NorthwindCRUD.Models.Dtos
 {
     public class AddressDto : IAddress
     {
+        [Required(ErrorMessage = "Street is required.")]
         [StringLength(100, ErrorMessage = "Street cannot exceed 100 characters.")]
         public string Street { get; set; }
 
+        [Required(ErrorMessage = "City is required.")]
         [StringLength(50, ErrorMessage = "City cannot exceed 50 characters.")]
         public string City { get; set; }
 
+        [Required(ErrorMessage = "Region is required.")]
         [StringLength(50, ErrorMessage = "Region cannot exceed 50 characters.")]
         public string Region { get; set; }
 
+        [Required(ErrorMessage = "PostalCode is required.")]
         [StringLength(20, ErrorMessage = "Postal code cannot exceed 20 characters.")]
         public string PostalCode { get; set; }