diff --git a/modules/account/src/Volo.Abp.Account.Application.Contracts/Volo/Abp/Account/RegisterDto.cs b/modules/account/src/Volo.Abp.Account.Application.Contracts/Volo/Abp/Account/RegisterDto.cs
index 9a9f3caa4e..b69383d26f 100644
--- a/modules/account/src/Volo.Abp.Account.Application.Contracts/Volo/Abp/Account/RegisterDto.cs
+++ b/modules/account/src/Volo.Abp.Account.Application.Contracts/Volo/Abp/Account/RegisterDto.cs
@@ -1,22 +1,23 @@
 using System.ComponentModel.DataAnnotations;
 using Volo.Abp.Auditing;
 using Volo.Abp.Identity;
+using Volo.Abp.Validation;
 
 namespace Volo.Abp.Account
 {
     public class RegisterDto
     {
         [Required]
-        [StringLength(IdentityUserConsts.MaxUserNameLength)]
+        [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxUserNameLength))]
         public string UserName { get; set; }
 
         [Required]
         [EmailAddress]
-        [StringLength(IdentityUserConsts.MaxEmailLength)]
+        [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxEmailLength))]
         public string EmailAddress { get; set; }
 
         [Required]
-        [StringLength(IdentityUserConsts.MaxPasswordLength)]
+        [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxPasswordLength))]
         [DataType(DataType.Password)]
         [DisableAuditing]
         public string Password { get; set; }
diff --git a/modules/account/src/Volo.Abp.Account.Web/Pages/Account/Login.cshtml.cs b/modules/account/src/Volo.Abp.Account.Web/Pages/Account/Login.cshtml.cs
index 34a084bd3d..5251cb12f1 100644
--- a/modules/account/src/Volo.Abp.Account.Web/Pages/Account/Login.cshtml.cs
+++ b/modules/account/src/Volo.Abp.Account.Web/Pages/Account/Login.cshtml.cs
@@ -254,11 +254,11 @@ namespace Volo.Abp.Account.Web.Pages.Account
         public class LoginInputModel
         {
             [Required]
-            [StringLength(IdentityUserConsts.MaxEmailLength)]
+            [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxEmailLength))]
             public string UserNameOrEmailAddress { get; set; }
 
             [Required]
-            [StringLength(IdentityUserConsts.MaxPasswordLength)]
+            [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxPasswordLength))]
             [DataType(DataType.Password)]
             [DisableAuditing]
             public string Password { get; set; }
diff --git a/modules/account/src/Volo.Abp.Account.Web/Pages/Account/Manage.cshtml.cs b/modules/account/src/Volo.Abp.Account.Web/Pages/Account/Manage.cshtml.cs
index deed56b736..3c779dc870 100644
--- a/modules/account/src/Volo.Abp.Account.Web/Pages/Account/Manage.cshtml.cs
+++ b/modules/account/src/Volo.Abp.Account.Web/Pages/Account/Manage.cshtml.cs
@@ -2,6 +2,7 @@
 using System.Threading.Tasks;
 using Volo.Abp.Identity;
 using Microsoft.AspNetCore.Mvc;
+using Volo.Abp.Validation;
 
 namespace Volo.Abp.Account.Web.Pages.Account
 {
@@ -36,44 +37,45 @@ namespace Volo.Abp.Account.Web.Pages.Account
     public class ChangePasswordInfoModel
     {
         [Required]
-        [StringLength(IdentityUserConsts.MaxPasswordLength)]
+        [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxPasswordLength))]
         [Display(Name = "DisplayName:CurrentPassword")]
         [DataType(DataType.Password)]
         public string CurrentPassword { get; set; }
 
         [Required]
-        [StringLength(IdentityUserConsts.MaxPasswordLength)]
+        [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxPasswordLength))]
         [Display(Name = "DisplayName:NewPassword")]
         [DataType(DataType.Password)]
         public string NewPassword { get; set; }
 
         [Required]
-        [StringLength(IdentityUserConsts.MaxPasswordLength)]
+        [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxPasswordLength))]
         [Display(Name = "DisplayName:NewPasswordConfirm")]
         [DataType(DataType.Password)]
         public string NewPasswordConfirm { get; set; }
     }
+    
     public class PersonalSettingsInfoModel
     {
         [Required]
-        [StringLength(IdentityUserConsts.MaxUserNameLength)]
+        [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxUserNameLength))]
         [Display(Name = "DisplayName:UserName")]
         public string UserName { get; set; }
 
         [Required]
-        [StringLength(IdentityUserConsts.MaxEmailLength)]
+        [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxEmailLength))]
         [Display(Name = "DisplayName:Email")]
         public string Email { get; set; }
 
-        [StringLength(IdentityUserConsts.MaxNameLength)]
+        [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxNameLength))]
         [Display(Name = "DisplayName:Name")]
         public string Name { get; set; }
 
-        [StringLength(IdentityUserConsts.MaxSurnameLength)]
+        [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxSurnameLength))]
         [Display(Name = "DisplayName:Surname")]
         public string Surname { get; set; }
 
-        [StringLength(IdentityUserConsts.MaxPhoneNumberLength)]
+        [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxPhoneNumberLength))]
         [Display(Name = "DisplayName:PhoneNumber")]
         public string PhoneNumber { get; set; }
     }
diff --git a/modules/account/src/Volo.Abp.Account.Web/Pages/Account/Register.cshtml.cs b/modules/account/src/Volo.Abp.Account.Web/Pages/Account/Register.cshtml.cs
index 87c7131305..f6d626dd63 100644
--- a/modules/account/src/Volo.Abp.Account.Web/Pages/Account/Register.cshtml.cs
+++ b/modules/account/src/Volo.Abp.Account.Web/Pages/Account/Register.cshtml.cs
@@ -9,6 +9,7 @@ using Volo.Abp.Application.Dtos;
 using Volo.Abp.Identity;
 using Volo.Abp.Settings;
 using Volo.Abp.Uow;
+using Volo.Abp.Validation;
 using IdentityUser = Volo.Abp.Identity.IdentityUser;
 
 namespace Volo.Abp.Account.Web.Pages.Account
@@ -74,16 +75,16 @@ namespace Volo.Abp.Account.Web.Pages.Account
         public class PostInput
         {
             [Required]
-            [StringLength(IdentityUserConsts.MaxUserNameLength)]
+            [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxUserNameLength))]
             public string UserName { get; set; }
 
             [Required]
             [EmailAddress]
-            [StringLength(IdentityUserConsts.MaxEmailLength)]
+            [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxEmailLength))]
             public string EmailAddress { get; set; }
 
             [Required]
-            [StringLength(IdentityUserConsts.MaxPasswordLength)]
+            [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxPasswordLength))]
             [DataType(DataType.Password)]
             [DisableAuditing]
             public string Password { get; set; }
diff --git a/modules/identity/src/Volo.Abp.Identity.Application.Contracts/Volo/Abp/Identity/IdentityRoleCreateOrUpdateDtoBase.cs b/modules/identity/src/Volo.Abp.Identity.Application.Contracts/Volo/Abp/Identity/IdentityRoleCreateOrUpdateDtoBase.cs
index 8e11d89b30..491e82d766 100644
--- a/modules/identity/src/Volo.Abp.Identity.Application.Contracts/Volo/Abp/Identity/IdentityRoleCreateOrUpdateDtoBase.cs
+++ b/modules/identity/src/Volo.Abp.Identity.Application.Contracts/Volo/Abp/Identity/IdentityRoleCreateOrUpdateDtoBase.cs
@@ -1,12 +1,13 @@
 using System.ComponentModel.DataAnnotations;
 using Volo.Abp.ObjectExtending;
+using Volo.Abp.Validation;
 
 namespace Volo.Abp.Identity
 {
     public class IdentityRoleCreateOrUpdateDtoBase : ExtensibleObject
     {
         [Required]
-        [StringLength(IdentityRoleConsts.MaxNameLength)]
+        [DynamicStringLength(typeof(IdentityRoleConsts), nameof(IdentityRoleConsts.MaxNameLength))]
         public string Name { get; set; }
 
         public bool IsDefault { get; set; }
diff --git a/modules/identity/src/Volo.Abp.Identity.Application.Contracts/Volo/Abp/Identity/IdentityUserCreateDto.cs b/modules/identity/src/Volo.Abp.Identity.Application.Contracts/Volo/Abp/Identity/IdentityUserCreateDto.cs
index a572c7db2c..a080a7e33e 100644
--- a/modules/identity/src/Volo.Abp.Identity.Application.Contracts/Volo/Abp/Identity/IdentityUserCreateDto.cs
+++ b/modules/identity/src/Volo.Abp.Identity.Application.Contracts/Volo/Abp/Identity/IdentityUserCreateDto.cs
@@ -1,13 +1,14 @@
 using System.ComponentModel.DataAnnotations;
 using Volo.Abp.Auditing;
+using Volo.Abp.Validation;
 
 namespace Volo.Abp.Identity
 {
     public class IdentityUserCreateDto : IdentityUserCreateOrUpdateDtoBase
     {
-        [Required]
-        [StringLength(IdentityUserConsts.MaxPasswordLength)]
         [DisableAuditing]
+        [Required]
+        [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxPasswordLength))]
         public string Password { get; set; }
     }
 }
\ No newline at end of file
diff --git a/modules/identity/src/Volo.Abp.Identity.Application.Contracts/Volo/Abp/Identity/IdentityUserCreateOrUpdateDtoBase.cs b/modules/identity/src/Volo.Abp.Identity.Application.Contracts/Volo/Abp/Identity/IdentityUserCreateOrUpdateDtoBase.cs
index c18f2c16b5..e06ea8b987 100644
--- a/modules/identity/src/Volo.Abp.Identity.Application.Contracts/Volo/Abp/Identity/IdentityUserCreateOrUpdateDtoBase.cs
+++ b/modules/identity/src/Volo.Abp.Identity.Application.Contracts/Volo/Abp/Identity/IdentityUserCreateOrUpdateDtoBase.cs
@@ -2,27 +2,28 @@
 using System.ComponentModel.DataAnnotations;
 using JetBrains.Annotations;
 using Volo.Abp.ObjectExtending;
+using Volo.Abp.Validation;
 
 namespace Volo.Abp.Identity
 {
     public abstract class IdentityUserCreateOrUpdateDtoBase : ExtensibleObject
     {
         [Required]
-        [StringLength(IdentityUserConsts.MaxUserNameLength)]
+        [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxUserNameLength))]
         public string UserName { get; set; }
 
-        [StringLength(IdentityUserConsts.MaxNameLength)]
+        [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxNameLength))]
         public string Name { get; set; }
 
-        [StringLength(IdentityUserConsts.MaxSurnameLength)]
+        [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxSurnameLength))]
         public string Surname { get; set; }
 
         [Required]
         [EmailAddress]
-        [StringLength(IdentityUserConsts.MaxEmailLength)]
+        [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxEmailLength))]
         public string Email { get; set; }
 
-        [StringLength(IdentityUserConsts.MaxPhoneNumberLength)]
+        [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxPhoneNumberLength))]
         public string PhoneNumber { get; set; }
 
         public bool TwoFactorEnabled { get; set; }
diff --git a/modules/identity/src/Volo.Abp.Identity.Application.Contracts/Volo/Abp/Identity/IdentityUserUpdateDto.cs b/modules/identity/src/Volo.Abp.Identity.Application.Contracts/Volo/Abp/Identity/IdentityUserUpdateDto.cs
index 216a55df9e..aa499bf2cd 100644
--- a/modules/identity/src/Volo.Abp.Identity.Application.Contracts/Volo/Abp/Identity/IdentityUserUpdateDto.cs
+++ b/modules/identity/src/Volo.Abp.Identity.Application.Contracts/Volo/Abp/Identity/IdentityUserUpdateDto.cs
@@ -1,13 +1,14 @@
 using System.ComponentModel.DataAnnotations;
 using Volo.Abp.Auditing;
 using Volo.Abp.Domain.Entities;
+using Volo.Abp.Validation;
 
 namespace Volo.Abp.Identity
 {
     public class IdentityUserUpdateDto : IdentityUserCreateOrUpdateDtoBase, IHasConcurrencyStamp
     {
-        [StringLength(IdentityUserConsts.MaxPasswordLength)]
         [DisableAuditing]
+        [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxPasswordLength))]
         public string Password { get; set; }
         
         public string ConcurrencyStamp { get; set; }
diff --git a/modules/identity/src/Volo.Abp.Identity.Application.Contracts/Volo/Abp/Identity/UpdateProfileDto.cs b/modules/identity/src/Volo.Abp.Identity.Application.Contracts/Volo/Abp/Identity/UpdateProfileDto.cs
index 52919c7744..5e0397bdfa 100644
--- a/modules/identity/src/Volo.Abp.Identity.Application.Contracts/Volo/Abp/Identity/UpdateProfileDto.cs
+++ b/modules/identity/src/Volo.Abp.Identity.Application.Contracts/Volo/Abp/Identity/UpdateProfileDto.cs
@@ -1,23 +1,24 @@
 using System.ComponentModel.DataAnnotations;
 using Volo.Abp.ObjectExtending;
+using Volo.Abp.Validation;
 
 namespace Volo.Abp.Identity
 {
     public class UpdateProfileDto : ExtensibleObject
     {
-        [StringLength(IdentityUserConsts.MaxUserNameLength)]
+        [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxUserNameLength))]
         public string UserName { get; set; }
 
-        [StringLength(IdentityUserConsts.MaxEmailLength)]
+        [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxEmailLength))]
         public string Email { get; set; }
 
-        [StringLength(IdentityUserConsts.MaxNameLength)]
+        [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxNameLength))]
         public string Name { get; set; }
 
-        [StringLength(IdentityUserConsts.MaxSurnameLength)]
+        [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxSurnameLength))]
         public string Surname { get; set; }
 
-        [StringLength(IdentityUserConsts.MaxPhoneNumberLength)]
+        [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxPhoneNumberLength))]
         public string PhoneNumber { get; set; }
     }
 }
\ No newline at end of file
diff --git a/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityClaimTypeConsts.cs b/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityClaimTypeConsts.cs
index 32e3197e12..6e15cb0cfc 100644
--- a/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityClaimTypeConsts.cs
+++ b/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityClaimTypeConsts.cs
@@ -2,10 +2,10 @@
 {
     public class IdentityClaimTypeConsts
     {
-        public const int MaxNameLength = 256;
-        public const int MaxRegexLength = 512;
-        public const int MaxRegexDescriptionLength = 128;
-        public const int MaxDescriptionLength = 256;
-        public const int MaxConcurrencyStampLength = 256;
+        public static int MaxNameLength { get; set; } = 256;
+        public static int MaxRegexLength { get; set; } = 512;
+        public static int MaxRegexDescriptionLength { get; set; } = 128;
+        public static int MaxDescriptionLength { get; set; } = 256;
+        public static int MaxConcurrencyStampLength { get; set; } = 256;
     }
 }
diff --git a/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityRoleClaimConsts.cs b/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityRoleClaimConsts.cs
index f53717486f..0f20ac40ef 100644
--- a/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityRoleClaimConsts.cs
+++ b/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityRoleClaimConsts.cs
@@ -2,8 +2,8 @@
 {
     public static class IdentityRoleClaimConsts
     {
-        public const int MaxClaimTypeLength = IdentityUserClaimConsts.MaxClaimTypeLength;
+        public static int MaxClaimTypeLength { get; set; } = IdentityUserClaimConsts.MaxClaimTypeLength;
 
-        public const int MaxClaimValueLength = IdentityUserClaimConsts.MaxClaimValueLength;
+        public static int MaxClaimValueLength { get; set; } = IdentityUserClaimConsts.MaxClaimValueLength;
     }
 }
diff --git a/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityRoleConsts.cs b/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityRoleConsts.cs
index cac33aa53d..33e8e74977 100644
--- a/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityRoleConsts.cs
+++ b/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityRoleConsts.cs
@@ -2,8 +2,8 @@
 {
     public static class IdentityRoleConsts
     {
-        public const int MaxNameLength = 256;
-        public const int MaxNormalizedNameLength = MaxNameLength;
-        public const int MaxConcurrencyStampLength = 256;
+        public static int MaxNameLength { get; set; } = 256;
+        public static int MaxNormalizedNameLength { get; set; } = 256;
+        public static int MaxConcurrencyStampLength { get; set; } = 256;
     }
 }
diff --git a/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityUserClaimConsts.cs b/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityUserClaimConsts.cs
index 025b255f11..a850d6cff2 100644
--- a/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityUserClaimConsts.cs
+++ b/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityUserClaimConsts.cs
@@ -2,8 +2,8 @@
 {
     public static class IdentityUserClaimConsts
     {
-        public const int MaxClaimTypeLength = 256;
+        public static int MaxClaimTypeLength { get; set; } = 256;
 
-        public const int MaxClaimValueLength = 1024;
+        public static int MaxClaimValueLength { get; set; } = 1024;
     }
 }
diff --git a/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityUserConsts.cs b/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityUserConsts.cs
index ef2cc57ef4..7b1a90dacc 100644
--- a/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityUserConsts.cs
+++ b/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityUserConsts.cs
@@ -4,26 +4,26 @@ namespace Volo.Abp.Identity
 {
     public static class IdentityUserConsts
     {
-        public const int MaxUserNameLength = AbpUserConsts.MaxUserNameLength;
+        public static int MaxUserNameLength { get; set; } = AbpUserConsts.MaxUserNameLength;
 
-        public const int MaxNameLength = AbpUserConsts.MaxNameLength;
+        public static int MaxNameLength { get; set; } = AbpUserConsts.MaxNameLength;
 
-        public const int MaxSurnameLength = AbpUserConsts.MaxSurnameLength;
+        public static int MaxSurnameLength { get; set; } = AbpUserConsts.MaxSurnameLength;
 
-        public const int MaxNormalizedUserNameLength = MaxUserNameLength;
+        public static int MaxNormalizedUserNameLength { get; set; } = MaxUserNameLength;
 
-        public const int MaxEmailLength = AbpUserConsts.MaxEmailLength;
+        public static int MaxEmailLength { get; set; } = AbpUserConsts.MaxEmailLength;
 
-        public const int MaxNormalizedEmailLength = MaxEmailLength;
+        public static int MaxNormalizedEmailLength { get; set; } = MaxEmailLength;
 
-        public const int MaxPhoneNumberLength = AbpUserConsts.MaxPhoneNumberLength;
+        public static int MaxPhoneNumberLength { get; set; } = AbpUserConsts.MaxPhoneNumberLength;
 
-        public const int MaxPasswordLength = 128;
+        public static int MaxPasswordLength { get; set; } = 128;
 
-        public const int MaxPasswordHashLength = 256;
+        public static int MaxPasswordHashLength { get; set; } = 256;
 
-        public const int MaxSecurityStampLength = 256;
+        public static int MaxSecurityStampLength { get; set; } = 256;
 
-        public const int MaxConcurrencyStampLength = 256;
+        public static int MaxConcurrencyStampLength { get; set; } = 256;
     }
 }
diff --git a/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityUserLoginConsts.cs b/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityUserLoginConsts.cs
index 0ef43bb1b1..3f95dfd634 100644
--- a/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityUserLoginConsts.cs
+++ b/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityUserLoginConsts.cs
@@ -2,8 +2,8 @@
 {
     public static class IdentityUserLoginConsts
     {
-        public const int MaxLoginProviderLength = 64;
-        public const int MaxProviderKeyLength = 196;
-        public const int MaxProviderDisplayNameLength = 128;
+        public static int MaxLoginProviderLength { get; set; } = 64;
+        public static int MaxProviderKeyLength { get; set; } = 196;
+        public static int MaxProviderDisplayNameLength { get; set; } = 128;
     }
 }
diff --git a/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityUserTokenConsts.cs b/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityUserTokenConsts.cs
index 92305851fb..1e4eb4794b 100644
--- a/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityUserTokenConsts.cs
+++ b/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/IdentityUserTokenConsts.cs
@@ -2,8 +2,8 @@
 {
     public static class IdentityUserTokenConsts
     {
-        public const int MaxLoginProviderLength = 64;
+        public static int MaxLoginProviderLength { get; set; } = 64;
 
-        public const int MaxNameLength = 128;
+        public static int MaxNameLength { get; set; } = 128;
     }
 }
diff --git a/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/OrganizationUnitConsts.cs b/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/OrganizationUnitConsts.cs
index ad6091a44e..7338fc8a28 100644
--- a/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/OrganizationUnitConsts.cs
+++ b/modules/identity/src/Volo.Abp.Identity.Domain.Shared/Volo/Abp/Identity/OrganizationUnitConsts.cs
@@ -5,7 +5,7 @@
         /// <summary>
         /// Maximum length of the <see cref="DisplayName"/> property.
         /// </summary>
-        public const int MaxDisplayNameLength = 128;
+        public static int MaxDisplayNameLength { get; set; } = 128;
 
         /// <summary>
         /// Maximum depth of an OU hierarchy.
diff --git a/modules/identity/src/Volo.Abp.Identity.Web/Pages/Identity/Roles/CreateModal.cshtml.cs b/modules/identity/src/Volo.Abp.Identity.Web/Pages/Identity/Roles/CreateModal.cshtml.cs
index e7244c80f1..df86acd94d 100644
--- a/modules/identity/src/Volo.Abp.Identity.Web/Pages/Identity/Roles/CreateModal.cshtml.cs
+++ b/modules/identity/src/Volo.Abp.Identity.Web/Pages/Identity/Roles/CreateModal.cshtml.cs
@@ -1,6 +1,7 @@
 using System.ComponentModel.DataAnnotations;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc;
+using Volo.Abp.Validation;
 
 namespace Volo.Abp.Identity.Web.Pages.Identity.Roles
 {
@@ -34,7 +35,7 @@ namespace Volo.Abp.Identity.Web.Pages.Identity.Roles
         public class RoleInfoModel
         {
             [Required]
-            [StringLength(IdentityRoleConsts.MaxNameLength)]
+            [DynamicStringLength(typeof(IdentityRoleConsts), nameof(IdentityRoleConsts.MaxNameLength))]
             [Display(Name = "DisplayName:RoleName")]
             public string Name { get; set; }
 
diff --git a/modules/identity/src/Volo.Abp.Identity.Web/Pages/Identity/Roles/EditModal.cshtml.cs b/modules/identity/src/Volo.Abp.Identity.Web/Pages/Identity/Roles/EditModal.cshtml.cs
index 69305d243c..8a004e95a5 100644
--- a/modules/identity/src/Volo.Abp.Identity.Web/Pages/Identity/Roles/EditModal.cshtml.cs
+++ b/modules/identity/src/Volo.Abp.Identity.Web/Pages/Identity/Roles/EditModal.cshtml.cs
@@ -3,6 +3,7 @@ using System.ComponentModel.DataAnnotations;
 using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc;
 using Volo.Abp.Domain.Entities;
+using Volo.Abp.Validation;
 
 namespace Volo.Abp.Identity.Web.Pages.Identity.Roles
 {
@@ -44,7 +45,7 @@ namespace Volo.Abp.Identity.Web.Pages.Identity.Roles
             public string ConcurrencyStamp { get; set; }
 
             [Required]
-            [StringLength(IdentityRoleConsts.MaxNameLength)]
+            [DynamicStringLength(typeof(IdentityRoleConsts), nameof(IdentityRoleConsts.MaxNameLength))]
             [Display(Name = "DisplayName:RoleName")]
             public string Name { get; set; }
 
diff --git a/modules/identity/src/Volo.Abp.Identity.Web/Pages/Identity/Users/CreateModal.cshtml.cs b/modules/identity/src/Volo.Abp.Identity.Web/Pages/Identity/Users/CreateModal.cshtml.cs
index e7a1f4a26d..6149c676b8 100644
--- a/modules/identity/src/Volo.Abp.Identity.Web/Pages/Identity/Users/CreateModal.cshtml.cs
+++ b/modules/identity/src/Volo.Abp.Identity.Web/Pages/Identity/Users/CreateModal.cshtml.cs
@@ -5,6 +5,7 @@ using System.Threading.Tasks;
 using Microsoft.AspNetCore.Mvc;
 using Volo.Abp.Auditing;
 using Volo.Abp.Application.Dtos;
+using Volo.Abp.Validation;
 
 namespace Volo.Abp.Identity.Web.Pages.Identity.Users
 {
@@ -54,27 +55,27 @@ namespace Volo.Abp.Identity.Web.Pages.Identity.Users
         public class UserInfoViewModel
         {
             [Required]
-            [StringLength(IdentityUserConsts.MaxUserNameLength)]
+            [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxUserNameLength))]
             public string UserName { get; set; }
 
-            [StringLength(IdentityUserConsts.MaxNameLength)]
+            [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxNameLength))]
             public string Name { get; set; }
 
-            [StringLength(IdentityUserConsts.MaxSurnameLength)]
+            [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxSurnameLength))]
             public string Surname { get; set; }
 
             [Required]
-            [StringLength(IdentityUserConsts.MaxPasswordLength)]
             [DataType(DataType.Password)]
             [DisableAuditing]
+            [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxPasswordLength))]
             public string Password { get; set; }
 
             [Required]
             [EmailAddress]
-            [StringLength(IdentityUserConsts.MaxEmailLength)]
+            [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxEmailLength))]
             public string Email { get; set; }
 
-            [StringLength(IdentityUserConsts.MaxPhoneNumberLength)]
+            [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxPhoneNumberLength))]
             public string PhoneNumber { get; set; }
 
             public bool TwoFactorEnabled { get; set; } = true;
diff --git a/modules/identity/src/Volo.Abp.Identity.Web/Pages/Identity/Users/EditModal.cshtml.cs b/modules/identity/src/Volo.Abp.Identity.Web/Pages/Identity/Users/EditModal.cshtml.cs
index f14ec21fe6..08c5ae0dd9 100644
--- a/modules/identity/src/Volo.Abp.Identity.Web/Pages/Identity/Users/EditModal.cshtml.cs
+++ b/modules/identity/src/Volo.Abp.Identity.Web/Pages/Identity/Users/EditModal.cshtml.cs
@@ -7,6 +7,7 @@ using Microsoft.AspNetCore.Mvc;
 using Volo.Abp.Auditing;
 using Volo.Abp.Application.Dtos;
 using Volo.Abp.Domain.Entities;
+using Volo.Abp.Validation;
 
 namespace Volo.Abp.Identity.Web.Pages.Identity.Users
 {
@@ -63,26 +64,26 @@ namespace Volo.Abp.Identity.Web.Pages.Identity.Users
             public string ConcurrencyStamp { get; set; }
 
             [Required]
-            [StringLength(IdentityUserConsts.MaxUserNameLength)]
+            [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxUserNameLength))]
             public string UserName { get; set; }
 
-            [StringLength(IdentityUserConsts.MaxNameLength)]
+            [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxNameLength))]
             public string Name { get; set; }
 
-            [StringLength(IdentityUserConsts.MaxSurnameLength)]
+            [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxSurnameLength))]
             public string Surname { get; set; }
 
-            [StringLength(IdentityUserConsts.MaxPasswordLength)]
+            [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxPasswordLength))]
             [DataType(DataType.Password)]
             [DisableAuditing]
             public string Password { get; set; }
 
             [Required]
             [EmailAddress]
-            [StringLength(IdentityUserConsts.MaxEmailLength)]
+            [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxEmailLength))]
             public string Email { get; set; }
 
-            [StringLength(IdentityUserConsts.MaxPhoneNumberLength)]
+            [DynamicStringLength(typeof(IdentityUserConsts), nameof(IdentityUserConsts.MaxPhoneNumberLength))]
             public string PhoneNumber { get; set; }
 
             public bool TwoFactorEnabled { get; set; }
diff --git a/modules/users/src/Volo.Abp.Users.Domain.Shared/Volo/Abp/Users/AbpUserConsts.cs b/modules/users/src/Volo.Abp.Users.Domain.Shared/Volo/Abp/Users/AbpUserConsts.cs
index acfce7f37b..ee37c6c9f4 100644
--- a/modules/users/src/Volo.Abp.Users.Domain.Shared/Volo/Abp/Users/AbpUserConsts.cs
+++ b/modules/users/src/Volo.Abp.Users.Domain.Shared/Volo/Abp/Users/AbpUserConsts.cs
@@ -2,14 +2,14 @@ namespace Volo.Abp.Users
 {
     public class AbpUserConsts
     {
-        public const int MaxUserNameLength = 256;
+        public static int MaxUserNameLength { get; set; } = 256;
         
-        public const int MaxNameLength = 64;
+        public static int MaxNameLength { get; set; } = 64;
         
-        public const int MaxSurnameLength = 64;
+        public static int MaxSurnameLength { get; set; } = 64;
 
-        public const int MaxEmailLength = 256;
+        public static int MaxEmailLength { get; set; } = 256;
 
-        public const int MaxPhoneNumberLength = 16;
+        public static int MaxPhoneNumberLength { get; set; } = 16;
     }
 }
\ No newline at end of file