diff --git a/npm/ng-packs/packages/core/src/lib/services/config-state.service.ts b/npm/ng-packs/packages/core/src/lib/services/config-state.service.ts
index e0ff482fc6..103aad6da2 100644
--- a/npm/ng-packs/packages/core/src/lib/services/config-state.service.ts
+++ b/npm/ng-packs/packages/core/src/lib/services/config-state.service.ts
@@ -14,18 +14,16 @@ import { InternalStore } from '../utils/internal-store-utils';
   providedIn: 'root',
 })
 export class ConfigStateService {
+  private updateSubject = new Subject<void>();
   private readonly store = new InternalStore({} as ApplicationConfigurationDto);
-  
-  setState(config: ApplicationConfigurationDto){
-    this.store.set(config)
+
+  setState(config: ApplicationConfigurationDto) {
+    this.store.set(config);
   }
 
   get createOnUpdateStream() {
     return this.store.sliceUpdate;
   }
-
-  private updateSubject = new Subject<void>();
-
   constructor(
     private abpConfigService: AbpApplicationConfigurationService,
     private abpApplicationLocalizationService: AbpApplicationLocalizationService,
@@ -228,4 +226,4 @@ function splitKeys(keys: string[] | string): string[] {
   }
 
   return keys;
-}
\ No newline at end of file
+}
diff --git a/npm/ng-packs/packages/core/src/lib/tests/validators.spec.ts b/npm/ng-packs/packages/core/src/lib/tests/validators.spec.ts
index 6bc33dbfda..695625b740 100644
--- a/npm/ng-packs/packages/core/src/lib/tests/validators.spec.ts
+++ b/npm/ng-packs/packages/core/src/lib/tests/validators.spec.ts
@@ -5,6 +5,7 @@ import { validateCreditCard } from '../validators/credit-card.validator';
 import { validateRequired } from '../validators/required.validator';
 import { validateStringLength } from '../validators/string-length.validator';
 import { validateUrl } from '../validators/url.validator';
+import { validateUniqueCharacter } from '../validators';
 
 const emailAddress = () => Validators.email;
 
@@ -181,4 +182,25 @@ describe('Validators', () => {
       expect(control.errors).toEqual(expected);
     });
   });
+
+  describe('Unique Character Validator', () => {
+    const error = { uniqueCharacter: true };
+
+    test.each`
+      input            | expected
+      ${undefined}     | ${null}
+      ${null}          | ${null}
+      ${''}            | ${null}
+      ${'password'}    | ${error}
+      ${'123456789'}   | ${null}
+      ${'1q2w3E*'}     | ${null}
+      ${'password123'} | ${error}
+    `('should return $expected when input is $input', ({ input, expected }) => {
+      const control = new FormControl(input, [validateUniqueCharacter()]);
+      control.markAsDirty({ onlySelf: true });
+      control.updateValueAndValidity({ onlySelf: true, emitEvent: false });
+
+      expect(control.errors).toEqual(expected);
+    });
+  });
 });
diff --git a/npm/ng-packs/packages/core/src/lib/validators/index.ts b/npm/ng-packs/packages/core/src/lib/validators/index.ts
index 69880dbf84..496cbb1f40 100644
--- a/npm/ng-packs/packages/core/src/lib/validators/index.ts
+++ b/npm/ng-packs/packages/core/src/lib/validators/index.ts
@@ -4,15 +4,18 @@ import { validateCreditCard } from './credit-card.validator';
 import { validateRange } from './range.validator';
 import { validateRequired } from './required.validator';
 import { validateStringLength } from './string-length.validator';
+import { validateUniqueCharacter } from './unique-character.validator';
 import { validateUrl } from './url.validator';
 import { validateUsername } from './username.validator';
+export { validateUniqueCharacter } from './unique-character.validator';
+
 export * from './age.validator';
 export * from './credit-card.validator';
 export * from './range.validator';
 export * from './required.validator';
 export * from './string-length.validator';
 export * from './url.validator';
-
+export * from './unique-character.validator';
 export const AbpValidators = {
   creditCard: validateCreditCard,
   emailAddress: () => Validators.email,
@@ -22,4 +25,5 @@ export const AbpValidators = {
   stringLength: validateStringLength,
   url: validateUrl,
   username: validateUsername,
+  uniqueCharacter: validateUniqueCharacter,
 };
diff --git a/npm/ng-packs/packages/core/src/lib/validators/unique-character.validator.ts b/npm/ng-packs/packages/core/src/lib/validators/unique-character.validator.ts
new file mode 100644
index 0000000000..509dc66c7f
--- /dev/null
+++ b/npm/ng-packs/packages/core/src/lib/validators/unique-character.validator.ts
@@ -0,0 +1,20 @@
+import { AbstractControl, ValidationErrors, ValidatorFn } from '@angular/forms';
+import { isNullOrEmpty } from '../utils';
+
+export interface UniqueCharacterError {
+  uniqueCharacter: true;
+}
+
+export function validateUniqueCharacter(): ValidatorFn {
+  return (control: AbstractControl): UniqueCharacterError | null => {
+    if (isNullOrEmpty(control.value)) return null;
+
+    return isUnqiueCharacter(control.value) ? null : { uniqueCharacter: true };
+  };
+}
+
+function isUnqiueCharacter(value: string): boolean {
+  const set = new Set<string>(value.split(''));
+
+  return set.size == value.length;
+}