diff --git a/NorthwindCRUD/Controllers/CategoriesController.cs b/NorthwindCRUD/Controllers/CategoriesController.cs
index 83fcb7a..d1c2143 100644
--- a/NorthwindCRUD/Controllers/CategoriesController.cs
+++ b/NorthwindCRUD/Controllers/CategoriesController.cs
@@ -1,13 +1,11 @@
 namespace NorthwindCRUD.Controllers
 {
-    using System.ComponentModel.DataAnnotations;
     using AutoMapper;
     using Microsoft.AspNetCore.Authorization;
     using Microsoft.AspNetCore.Mvc;
     using NorthwindCRUD.Models.DbModels;
     using NorthwindCRUD.Models.Dtos;
     using NorthwindCRUD.Services;
-    using Swashbuckle.AspNetCore.Annotations;
 
     [ApiController]
     [Route("[controller]")]
@@ -52,8 +50,8 @@ public ActionResult<CategoryDto[]> GetAll()
         /// <returns>A PagedResultDto object containing the fetched T and the total record count.</returns>
         [HttpGet("GetCategoriesWithSkip")]
         public ActionResult<PagedResultDto<CategoryDto>> GetCategoriesWithSkip(
-            [FromQuery][Attributes.SwaggerSkipParameter][Range(0, int.MaxValue)] int? skip,
-            [FromQuery][Attributes.SwaggerTopParameter][Range(0, int.MaxValue)] int? top,
+            [FromQuery][Attributes.SwaggerSkipParameter] int? skip,
+            [FromQuery][Attributes.SwaggerTopParameter] int? top,
             [FromQuery][Attributes.SwaggerOrderByParameter] string? orderBy)
         {
             try
diff --git a/NorthwindCRUD/Controllers/CustomersController.cs b/NorthwindCRUD/Controllers/CustomersController.cs
index 9e4aaf4..cc6dd77 100644
--- a/NorthwindCRUD/Controllers/CustomersController.cs
+++ b/NorthwindCRUD/Controllers/CustomersController.cs
@@ -1,6 +1,5 @@
 namespace NorthwindCRUD.Controllers
 {
-    using System.ComponentModel.DataAnnotations;
     using AutoMapper;
     using Microsoft.AspNetCore.Authorization;
     using Microsoft.AspNetCore.Mvc;
@@ -51,8 +50,8 @@ public ActionResult<CustomerDto[]> GetAll()
         /// <returns>A PagedResultDto object containing the fetched T and the total record count.</returns>
         [HttpGet("GetCustomersWithSkip")]
         public ActionResult<PagedResultDto<CustomerDto>> GetCustomersWithSkip(
-            [FromQuery][Attributes.SwaggerSkipParameter][Range(0, int.MaxValue)] int? skip,
-            [FromQuery][Attributes.SwaggerTopParameter][Range(0, int.MaxValue)] int? top,
+            [FromQuery][Attributes.SwaggerSkipParameter] int? skip,
+            [FromQuery][Attributes.SwaggerTopParameter] int? top,
             [FromQuery][Attributes.SwaggerOrderByParameter] string? orderBy)
         {
             try
diff --git a/NorthwindCRUD/Controllers/EmployeesController.cs b/NorthwindCRUD/Controllers/EmployeesController.cs
index a7b20bf..f220dd0 100644
--- a/NorthwindCRUD/Controllers/EmployeesController.cs
+++ b/NorthwindCRUD/Controllers/EmployeesController.cs
@@ -1,6 +1,5 @@
 namespace NorthwindCRUD.Controllers
 {
-    using System.ComponentModel.DataAnnotations;
     using AutoMapper;
     using Microsoft.AspNetCore.Authorization;
     using Microsoft.AspNetCore.Mvc;
@@ -69,8 +68,8 @@ public ActionResult<OrderDto[]> GetAllAuthorized()
         /// <returns>A PagedResultDto object containing the fetched T and the total record count.</returns>
         [HttpGet("GetEmployeesWithSkip")]
         public ActionResult<PagedResultDto<EmployeeDto>> GetPagedEmployees(
-            [FromQuery][Attributes.SwaggerSkipParameter][Range(0, int.MaxValue)] int? skip,
-            [FromQuery][Attributes.SwaggerTopParameter][Range(0, int.MaxValue)] int? top,
+            [FromQuery][Attributes.SwaggerSkipParameter] int? skip,
+            [FromQuery][Attributes.SwaggerTopParameter] int? top,
             [FromQuery][Attributes.SwaggerOrderByParameter] string? orderBy)
         {
             try
diff --git a/NorthwindCRUD/Controllers/OrdersController.cs b/NorthwindCRUD/Controllers/OrdersController.cs
index e1ef0a3..acd1e5f 100644
--- a/NorthwindCRUD/Controllers/OrdersController.cs
+++ b/NorthwindCRUD/Controllers/OrdersController.cs
@@ -1,6 +1,5 @@
 namespace NorthwindCRUD.Controllers
 {
-    using System.ComponentModel.DataAnnotations;
     using AutoMapper;
     using Microsoft.AspNetCore.Authorization;
     using Microsoft.AspNetCore.Mvc;
@@ -57,8 +56,8 @@ public ActionResult<OrderDto[]> GetAll()
         /// <returns>A PagedResultDto object containing the fetched T and the total record count.</returns>
         [HttpGet("GetPagedOrders")]
         public ActionResult<PagedResultDto<OrderDto>> GetAllOrders(
-            [FromQuery][Attributes.SwaggerSkipParameter][Range(0, int.MaxValue)] int? skip,
-            [FromQuery][Attributes.SwaggerTopParameter][Range(0, int.MaxValue)] int? top,
+            [FromQuery][Attributes.SwaggerSkipParameter] int? skip,
+            [FromQuery][Attributes.SwaggerTopParameter] int? top,
             [FromQuery][Attributes.SwaggerOrderByParameter] string? orderBy)
         {
             try
diff --git a/NorthwindCRUD/Controllers/ProductsController.cs b/NorthwindCRUD/Controllers/ProductsController.cs
index b3c8a26..0315470 100644
--- a/NorthwindCRUD/Controllers/ProductsController.cs
+++ b/NorthwindCRUD/Controllers/ProductsController.cs
@@ -1,6 +1,5 @@
 namespace NorthwindCRUD.Controllers
 {
-    using System.ComponentModel.DataAnnotations;
     using AutoMapper;
     using Microsoft.AspNetCore.Authorization;
     using Microsoft.AspNetCore.Mvc;
@@ -71,8 +70,8 @@ public ActionResult<OrderDto[]> GetAllAuthorized()
         /// <returns>A PagedResultDto object containing the fetched T and the total record count.</returns>
         [HttpGet("GetPagedProducts")]
         public ActionResult<PagedResultDto<ProductDto>> GetAllProducts(
-            [FromQuery][Attributes.SwaggerSkipParameter][Range(0, int.MaxValue)] int? skip,
-            [FromQuery][Attributes.SwaggerTopParameter][Range(0, int.MaxValue)] int? top,
+            [FromQuery][Attributes.SwaggerSkipParameter] int? skip,
+            [FromQuery][Attributes.SwaggerTopParameter] int? top,
             [FromQuery][Attributes.SwaggerOrderByParameter] string? orderBy)
         {
             try
diff --git a/NorthwindCRUD/Controllers/RegionsController.cs b/NorthwindCRUD/Controllers/RegionsController.cs
index 3830dbc..29b6a50 100644
--- a/NorthwindCRUD/Controllers/RegionsController.cs
+++ b/NorthwindCRUD/Controllers/RegionsController.cs
@@ -1,6 +1,5 @@
 namespace NorthwindCRUD.Controllers
 {
-    using System.ComponentModel.DataAnnotations;
     using AutoMapper;
     using Microsoft.AspNetCore.Authorization;
     using Microsoft.AspNetCore.Mvc;
@@ -51,8 +50,8 @@ public ActionResult<RegionDto[]> GetAll()
         /// <returns>A PagedResultDto object containing the fetched T and the total record count.</returns>
         [HttpGet("GetPagedRegions")]
         public ActionResult<PagedResultDto<RegionDto>> GetAllRegions(
-            [FromQuery][Attributes.SwaggerSkipParameter][Range(0, int.MaxValue)] int? skip,
-            [FromQuery][Attributes.SwaggerTopParameter][Range(0, int.MaxValue)] int? top,
+            [FromQuery][Attributes.SwaggerSkipParameter] int? skip,
+            [FromQuery][Attributes.SwaggerTopParameter] int? top,
             [FromQuery][Attributes.SwaggerOrderByParameter] string? orderBy)
         {
             try
diff --git a/NorthwindCRUD/Controllers/ShippersController.cs b/NorthwindCRUD/Controllers/ShippersController.cs
index 0a28356..9924c2c 100644
--- a/NorthwindCRUD/Controllers/ShippersController.cs
+++ b/NorthwindCRUD/Controllers/ShippersController.cs
@@ -1,6 +1,5 @@
 namespace NorthwindCRUD.Controllers
 {
-    using System.ComponentModel.DataAnnotations;
     using AutoMapper;
     using Microsoft.AspNetCore.Authorization;
     using Microsoft.AspNetCore.Mvc;
@@ -51,8 +50,8 @@ public ActionResult<ShipperDto[]> GetAll()
         /// <returns>A PagedResultDto object containing the fetched T and the total record count.</returns>
         [HttpGet("GetPagedShippersWithSkip")]
         public ActionResult<PagedResultDto<ShipperDto>> GetPagedShippersWithSkip(
-            [FromQuery][Attributes.SwaggerSkipParameter][Range(0, int.MaxValue)] int? skip,
-            [FromQuery][Attributes.SwaggerTopParameter][Range(0, int.MaxValue)] int? top,
+            [FromQuery][Attributes.SwaggerSkipParameter] int? skip,
+            [FromQuery][Attributes.SwaggerTopParameter] int? top,
             [FromQuery][Attributes.SwaggerOrderByParameter] string? orderBy)
         {
             try
diff --git a/NorthwindCRUD/Controllers/SuppliersController.cs b/NorthwindCRUD/Controllers/SuppliersController.cs
index c8b65e6..0914ed9 100644
--- a/NorthwindCRUD/Controllers/SuppliersController.cs
+++ b/NorthwindCRUD/Controllers/SuppliersController.cs
@@ -1,6 +1,5 @@
 namespace NorthwindCRUD.Controllers
 {
-    using System.ComponentModel.DataAnnotations;
     using AutoMapper;
     using Microsoft.AspNetCore.Authorization;
     using Microsoft.AspNetCore.Mvc;
@@ -51,8 +50,8 @@ public ActionResult<SupplierDto[]> GetAll()
         /// <returns>A PagedResultDto object containing the fetched T and the total record count.</returns>
         [HttpGet("GetPagedSuppliers")]
         public ActionResult<PagedResultDto<SupplierDto>> GetAllSuppliers(
-            [FromQuery][Attributes.SwaggerSkipParameter][Range(0, int.MaxValue)] int? skip,
-            [FromQuery][Attributes.SwaggerTopParameter][Range(0, int.MaxValue)] int? top,
+            [FromQuery][Attributes.SwaggerSkipParameter] int? skip,
+            [FromQuery][Attributes.SwaggerTopParameter] int? top,
             [FromQuery][Attributes.SwaggerOrderByParameter] string? orderBy)
         {
             try
diff --git a/NorthwindCRUD/Controllers/TerritoriesController.cs b/NorthwindCRUD/Controllers/TerritoriesController.cs
index e96ba59..05f160d 100644
--- a/NorthwindCRUD/Controllers/TerritoriesController.cs
+++ b/NorthwindCRUD/Controllers/TerritoriesController.cs
@@ -1,6 +1,5 @@
 namespace NorthwindCRUD.Controllers
 {
-    using System.ComponentModel.DataAnnotations;
     using AutoMapper;
     using Microsoft.AspNetCore.Authorization;
     using Microsoft.AspNetCore.Mvc;
@@ -53,8 +52,8 @@ public ActionResult<TerritoryDto[]> GetAll()
         /// <returns>A PagedResultDto object containing the fetched T and the total record count.</returns>
         [HttpGet("GetPagedTerritories")]
         public ActionResult<PagedResultDto<TerritoryDto>> GetAllTerritories(
-            [FromQuery][Attributes.SwaggerSkipParameter][Range(0, int.MaxValue)] int? skip,
-            [FromQuery][Attributes.SwaggerTopParameter][Range(0, int.MaxValue)] int? top,
+            [FromQuery][Attributes.SwaggerSkipParameter] int? skip,
+            [FromQuery][Attributes.SwaggerTopParameter] int? top,
             [FromQuery][Attributes.SwaggerOrderByParameter] string? orderBy)
         {
             try
diff --git a/NorthwindCRUD/Models/Dtos/AddressDto.cs b/NorthwindCRUD/Models/Dtos/AddressDto.cs
index 1ae2ce7..fbef3b4 100644
--- a/NorthwindCRUD/Models/Dtos/AddressDto.cs
+++ b/NorthwindCRUD/Models/Dtos/AddressDto.cs
@@ -5,23 +5,17 @@ namespace NorthwindCRUD.Models.Dtos
 {
     public class AddressDto : IAddress
     {
-        [StringLength(100, ErrorMessage = "Street cannot exceed 100 characters.")]
         public string Street { get; set; }
 
-        [StringLength(50, ErrorMessage = "City cannot exceed 50 characters.")]
         public string City { get; set; }
 
-        [StringLength(50, ErrorMessage = "Region cannot exceed 50 characters.")]
         public string Region { get; set; }
 
-        [StringLength(20, ErrorMessage = "Postal code cannot exceed 20 characters.")]
         public string PostalCode { get; set; }
 
         [Required(ErrorMessage = "Country is required.")]
-        [StringLength(50, ErrorMessage = "Country cannot exceed 50 characters.")]
         public string Country { get; set; }
 
-        [RegularExpression(@"^\+?\(?\d{1,5}\)?[-.\s]?\(?\d{1,5}\)?[-.\s]?\d{1,4}[-.\s]?\d{1,4}[-.\s]?\d{1,10}$", ErrorMessage = "Phone number is not valid.")]
         public string? Phone { get; set; }
     }
 }
diff --git a/NorthwindCRUD/Models/Dtos/CategoryDetailsDto.cs b/NorthwindCRUD/Models/Dtos/CategoryDetailsDto.cs
index 62e0d41..36b590c 100644
--- a/NorthwindCRUD/Models/Dtos/CategoryDetailsDto.cs
+++ b/NorthwindCRUD/Models/Dtos/CategoryDetailsDto.cs
@@ -5,7 +5,6 @@ namespace NorthwindCRUD.Models.Dtos
 {
     public class CategoryDetailsDto : CategoryDto, ICategoryDetail
     {
-        [RegularExpression(@"^(http[s]?://.*\.(?:jpg|jpeg|png|gif))$", ErrorMessage = "Picture URL must start with http/s and end with .jpg, .jpeg, .png, or .gif.")]
         public string Picture { get; set; }
     }
 }
diff --git a/NorthwindCRUD/Models/Dtos/CategoryDto.cs b/NorthwindCRUD/Models/Dtos/CategoryDto.cs
index ac04f4b..34b7158 100644
--- a/NorthwindCRUD/Models/Dtos/CategoryDto.cs
+++ b/NorthwindCRUD/Models/Dtos/CategoryDto.cs
@@ -7,11 +7,9 @@ public class CategoryDto : ICategory
     {
         public int CategoryId { get; set; }
 
-        [StringLength(500, ErrorMessage = "Description cannot exceed 500 characters.")]
         public string Description { get; set; }
 
         [Required(ErrorMessage = "Name is required.")]
-        [StringLength(50, MinimumLength = 3, ErrorMessage = "Name must be between 3 and 50 characters.")]
         public string Name { get; set; }
     }
 }
diff --git a/NorthwindCRUD/Models/Dtos/CustomerDto.cs b/NorthwindCRUD/Models/Dtos/CustomerDto.cs
index 47a55ae..ba10ed5 100644
--- a/NorthwindCRUD/Models/Dtos/CustomerDto.cs
+++ b/NorthwindCRUD/Models/Dtos/CustomerDto.cs
@@ -8,13 +8,10 @@ public class CustomerDto : ICustomer
         public string CustomerId { get; set; }
 
         [Required(ErrorMessage = "Company Name is required.")]
-        [StringLength(100, ErrorMessage = "Company Name cannot exceed 100 characters.")]
         public string CompanyName { get; set; }
 
-        [StringLength(50, ErrorMessage = "Contact Name cannot exceed 50 characters.")]
         public string ContactName { get; set; }
 
-        [StringLength(50, ErrorMessage = "Contact Title cannot exceed 50 characters.")]
         public string ContactTitle { get; set; }
 
         public AddressDto Address { get; set; }
diff --git a/NorthwindCRUD/Models/Dtos/EmployeeDto.cs b/NorthwindCRUD/Models/Dtos/EmployeeDto.cs
index 31c70c4..99a0d46 100644
--- a/NorthwindCRUD/Models/Dtos/EmployeeDto.cs
+++ b/NorthwindCRUD/Models/Dtos/EmployeeDto.cs
@@ -10,29 +10,21 @@ public class EmployeeDto : IEmployee
         public int EmployeeId { get; set; }
 
         [Required(ErrorMessage = "Last name is required.")]
-        [StringLength(50, ErrorMessage = "Last name cannot exceed 50 characters.")]
         [SwaggerSchema("Employee's last name.")]
         public string LastName { get; set; }
 
-        [StringLength(50, ErrorMessage = "First name cannot exceed 50 characters.")]
         [SwaggerSchema("Employee's first name.")]
         public string FirstName { get; set; }
 
-        [StringLength(50, ErrorMessage = "Title cannot exceed 50 characters.")]
         [SwaggerSchema("Employee's title")]
         public string Title { get; set; }
 
-        [StringLength(50, ErrorMessage = "Title of courtesy cannot exceed 50 characters.")]
         [SwaggerSchema("Title used in salutations")]
         public string TitleOfCourtesy { get; set; }
 
-        [DataType(DataType.Date, ErrorMessage = "BirthDate must be a valid date.")]
-        [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:yyyy-MM-dd}")]
         [SwaggerSchema("Employee's birth date")]
         public string BirthDate { get; set; }
 
-        [DataType(DataType.Date, ErrorMessage = "HireDate must be a valid date.")]
-        [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:yyyy-MM-dd}")]
         [SwaggerSchema("Employee's hire date")]
         public string HireDate { get; set; }
 
@@ -40,15 +32,12 @@ public class EmployeeDto : IEmployee
 
         public AddressDto Address { get; set; }
 
-        [StringLength(1000, ErrorMessage = "Notes cannot exceed 1000 characters.")]
         [SwaggerSchema("General information about employee's background.")]
         public string Notes { get; set; }
 
-        [RegularExpression(@"^https?:\/\/.+\..+", ErrorMessage = "Avatar URL is not valid.")]
         [SwaggerSchema("Employee's avatar url.")]
         public string AvatarUrl { get; set; }
 
-        [Range(1, int.MaxValue, ErrorMessage = "ReportsTo must be a valid employee ID.")]
         [SwaggerSchema("Employee's supervisor.")]
         public int ReportsTo { get; set; }
     }
diff --git a/NorthwindCRUD/Models/Dtos/LoginDto.cs b/NorthwindCRUD/Models/Dtos/LoginDto.cs
index f3f8648..b76b854 100644
--- a/NorthwindCRUD/Models/Dtos/LoginDto.cs
+++ b/NorthwindCRUD/Models/Dtos/LoginDto.cs
@@ -1,11 +1,9 @@
-using System.ComponentModel.DataAnnotations;
-using NorthwindCRUD.Models.Contracts;
+using NorthwindCRUD.Models.Contracts;
 
 namespace NorthwindCRUD.Models.Dtos
 {
     public class LoginDto : IUser
     {
-        [EmailAddress]
         public string Email { get; set; }
 
         public string Password { get; set; }
diff --git a/NorthwindCRUD/Models/Dtos/OrderDetailDto.cs b/NorthwindCRUD/Models/Dtos/OrderDetailDto.cs
index b008471..f370893 100644
--- a/NorthwindCRUD/Models/Dtos/OrderDetailDto.cs
+++ b/NorthwindCRUD/Models/Dtos/OrderDetailDto.cs
@@ -9,10 +9,8 @@ public class OrderDetailDto
 
         public int ProductId { get; set; }
 
-        [Range(0.01, double.MaxValue, ErrorMessage = "Unit price must be greater than 0.")]
         public double UnitPrice { get; set; }
 
-        [Range(1, int.MaxValue, ErrorMessage = "Quantity must be at least 1.")]
         public int Quantity { get; set; }
 
         public float Discount { get; set; }
diff --git a/NorthwindCRUD/Models/Dtos/OrderDto.cs b/NorthwindCRUD/Models/Dtos/OrderDto.cs
index 9d8ebdb..565c0ba 100644
--- a/NorthwindCRUD/Models/Dtos/OrderDto.cs
+++ b/NorthwindCRUD/Models/Dtos/OrderDto.cs
@@ -11,26 +11,18 @@ public class OrderDto : IOrder
         [Required(ErrorMessage = "CustomerId is required.")]
         public string CustomerId { get; set; }
 
-        [Range(1, int.MaxValue, ErrorMessage = "EmployeeId must be a valid employee ID.")]
         public int EmployeeId { get; set; }
 
-        [Range(1, int.MaxValue, ErrorMessage = "ShipperId must be a valid shipper ID.")]
         public int ShipperId { get; set; }
 
-        [DataType(DataType.Date, ErrorMessage = "OrderDate must be a valid date.")]
-        [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:yyyy-MM-dd}")]
         public string OrderDate { get; set; }
 
-        [DataType(DataType.Date, ErrorMessage = "RequiredDate must be a valid date.")]
-        [DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:yyyy-MM-dd}")]
         public string RequiredDate { get; set; }
 
         public Shipping? ShipVia { get; set; }
 
-        [Range(0, double.MaxValue, ErrorMessage = "Freight must be a non-negative value.")]
         public double Freight { get; set; }
 
-        [StringLength(100, ErrorMessage = "ShipName cannot exceed 100 characters.")]
         public string ShipName { get; set; }
 
         public bool Completed { get; set; }
diff --git a/NorthwindCRUD/Models/Dtos/ProductDto.cs b/NorthwindCRUD/Models/Dtos/ProductDto.cs
index 98be8ee..6159499 100644
--- a/NorthwindCRUD/Models/Dtos/ProductDto.cs
+++ b/NorthwindCRUD/Models/Dtos/ProductDto.cs
@@ -1,5 +1,4 @@
-using System.ComponentModel.DataAnnotations;
-using NorthwindCRUD.Models.Contracts;
+using NorthwindCRUD.Models.Contracts;
 
 namespace NorthwindCRUD.Models.Dtos
 {
@@ -7,25 +6,18 @@ public class ProductDto : IProduct
     {
         public int ProductId { get; set; }
 
-        [Range(1, int.MaxValue, ErrorMessage = "SupplierId must be a valid supplier ID.")]
         public int? SupplierId { get; set; }
 
-        [Range(1, int.MaxValue, ErrorMessage = "CategoryId must be a valid category ID.")]
         public int? CategoryId { get; set; }
 
-        [StringLength(100, ErrorMessage = "QuantityPerUnit cannot exceed 100 characters.")]
         public string QuantityPerUnit { get; set; }
 
-        [Range(0, double.MaxValue, ErrorMessage = "UnitPrice must be a non-negative value.")]
         public double? UnitPrice { get; set; }
 
-        [Range(0, 1000000000, ErrorMessage = "UnitsInStock must be a non-negative value.")]
         public int? UnitsInStock { get; set; }
 
-        [Range(0, 1000000, ErrorMessage = "UnitsOnOrder must be a non-negative value.")]
         public int? UnitsOnOrder { get; set; }
 
-        [Range(0, int.MaxValue, ErrorMessage = "ReorderLevel must be a non-negative value.")]
         public int? ReorderLevel { get; set; }
 
         public bool Discontinued { get; set; }
diff --git a/NorthwindCRUD/Models/Dtos/RegisterDto.cs b/NorthwindCRUD/Models/Dtos/RegisterDto.cs
index a17d7c5..ca41e91 100644
--- a/NorthwindCRUD/Models/Dtos/RegisterDto.cs
+++ b/NorthwindCRUD/Models/Dtos/RegisterDto.cs
@@ -6,7 +6,6 @@ namespace NorthwindCRUD.Models.Dtos
     public class RegisterDto : IUser
     {
         [Required]
-        [EmailAddress]
         public string Email { get; set; }
 
         [Required]
diff --git a/NorthwindCRUD/Models/Dtos/SalesDto.cs b/NorthwindCRUD/Models/Dtos/SalesDto.cs
index d554dce..0ee7277 100644
--- a/NorthwindCRUD/Models/Dtos/SalesDto.cs
+++ b/NorthwindCRUD/Models/Dtos/SalesDto.cs
@@ -7,10 +7,8 @@ public class SalesDto
         [Required(ErrorMessage = "ProductId is required.")]
         public int ProductId { get; set; }
 
-        [Range(1, int.MaxValue, ErrorMessage = "QuantitySold must be at least 1.")]
         public int QuantitySold { get; set; }
 
-        [Range(0.01, 1000000, ErrorMessage = "SaleAmount must be greater than 0.")]
         public double SaleAmount { get; set; }
     }
 }
diff --git a/NorthwindCRUD/Models/Dtos/ShipperDto.cs b/NorthwindCRUD/Models/Dtos/ShipperDto.cs
index 8eb852e..a01c71c 100644
--- a/NorthwindCRUD/Models/Dtos/ShipperDto.cs
+++ b/NorthwindCRUD/Models/Dtos/ShipperDto.cs
@@ -8,10 +8,8 @@ public class ShipperDto : IShipper
         public int ShipperId { get; set; }
 
         [Required(ErrorMessage = "Company Name is required.")]
-        [StringLength(100, ErrorMessage = "Company Name cannot exceed 100 characters.")]
         public string CompanyName { get; set; }
 
-        [RegularExpression(@"^\+?\(?\d{1,5}\)?[-.\s]?\(?\d{1,5}\)?[-.\s]?\d{1,4}[-.\s]?\d{1,4}[-.\s]?\d{1,10}$", ErrorMessage = "Phone number is not valid.")]
         public string Phone { get; set; }
     }
 }
diff --git a/NorthwindCRUD/Models/Dtos/SupplierDto.cs b/NorthwindCRUD/Models/Dtos/SupplierDto.cs
index b82509a..a96b0e1 100644
--- a/NorthwindCRUD/Models/Dtos/SupplierDto.cs
+++ b/NorthwindCRUD/Models/Dtos/SupplierDto.cs
@@ -8,37 +8,26 @@ public class SupplierDto : ISupplier
         public int SupplierId { get; set; }
 
         [Required(ErrorMessage = "Company Name is required.")]
-        [StringLength(100, ErrorMessage = "Company Name cannot exceed 100 characters.")]
         public string? CompanyName { get; set; }
 
-        [StringLength(100, ErrorMessage = "Contact Name cannot exceed 100 characters.")]
         public string? ContactName { get; set; }
 
-        [StringLength(50, ErrorMessage = "Contact Title cannot exceed 50 characters.")]
         public string? ContactTitle { get; set; }
 
-        [StringLength(250, ErrorMessage = "Address cannot exceed 250 characters.")]
         public string? Address { get; set; }
 
-        [StringLength(50, ErrorMessage = "City cannot exceed 50 characters.")]
         public string? City { get; set; }
 
-        [StringLength(50, ErrorMessage = "Region cannot exceed 50 characters.")]
         public string? Region { get; set; }
 
-        [StringLength(20, ErrorMessage = "Postal Code cannot exceed 20 characters.")]
         public string? PostalCode { get; set; }
 
-        [StringLength(50, ErrorMessage = "Country cannot exceed 50 characters.")]
         public string? Country { get; set; }
 
-        [RegularExpression(@"^\+?\(?\d{1,5}\)?[-.\s]?\(?\d{1,5}\)?[-.\s]?\d{1,4}[-.\s]?\d{1,4}[-.\s]?\d{1,10}$", ErrorMessage = "Phone number is not valid.")]
         public string? Phone { get; set; }
 
-        [RegularExpression(@"^\+?\(?\d{1,5}\)?[-.\s]?\(?\d{1,5}\)?[-.\s]?\d{1,4}[-.\s]?\d{1,4}[-.\s]?\d{1,10}$", ErrorMessage = "Fax number is not valid.")]
         public string? Fax { get; set; }
 
-        [RegularExpression(@"^https?:\/\/[^\s$.?#].[^\s]*$", ErrorMessage = "Home Page URL is not valid.")]
         public string? HomePage { get; set; }
     }
 }