diff --git a/api/arkui/stateManagement/decorator.d.ets b/api/arkui/stateManagement/decorator.d.ets
index c6cc8bc552d873a6c25f0d7ea750c9ecee825d73..43e461b57a1be146e97bc142d71b26886a15e4a5 100644
--- a/api/arkui/stateManagement/decorator.d.ets
+++ b/api/arkui/stateManagement/decorator.d.ets
@@ -981,14 +981,13 @@ export declare interface IStateMgmtFactory {
    * @param { string } propName - property name.
    * @param { string } varName - state variable name.
    * @param { T } initValue - init value.
-   * @param { Type } ttype - value type.
    * @param { WatchFuncType } [watchFunc] - watch type
    * @returns { IStorageLinkDecoratedVariable<T> } StorageLink instance
    * @syscap SystemCapability.ArkUI.ArkUI.Full
    * @since 20
    */
   makeStorageLink<T>(owningView: ExtendableComponent, propName: string,
-        varName: string, initValue: T, ttype: Type, watchFunc?: WatchFuncType): IStorageLinkDecoratedVariable<T>;
+        varName: string, initValue: T, watchFunc?: WatchFuncType): IStorageLinkDecoratedVariable<T>;
    /**
     * Create a StoragePropRef variable instance.
     *
@@ -996,14 +995,13 @@ export declare interface IStateMgmtFactory {
     * @param { string } propName - property name.
     * @param { string } varName - state variable name.
     * @param { T } initValue - init value.
-    * @param { Type } ttype - value type.
     * @param { WatchFuncType } [watchFunc] - watch type
     * @returns { IStoragePropRefDecoratedVariable<T> } StoragePropRef instance
     * @syscap SystemCapability.ArkUI.ArkUI.Full
     * @since 20
     */
    makeStoragePropRef<T>(owningView: ExtendableComponent, propName: string,
-        varName: string, initValue: T, ttype: Type, watchFunc?: WatchFuncType): IStoragePropRefDecoratedVariable<T>;
+        varName: string, initValue: T, watchFunc?: WatchFuncType): IStoragePropRefDecoratedVariable<T>;
   /**
    * Create a LocalStoragePropRef variable instance.
    *
@@ -1011,14 +1009,13 @@ export declare interface IStateMgmtFactory {
    * @param { string } propName - property name.
    * @param { string } varName - state variable name.
    * @param { T } initValue - init value.
-   * @param { Type } ttype - value type.
    * @param { WatchFuncType } [watchFunc] - watch type
    * @returns { ILocalStoragePropRefDecoratedVariable<T> } LocalStoragePropRef instance
    * @syscap SystemCapability.ArkUI.ArkUI.Full
    * @since 20
    */
    makeLocalStoragePropRef<T>(owningView: ExtendableComponent, propName: string,
-        varName: string, initValue: T, ttype: Type, watchFunc?: WatchFuncType): ILocalStoragePropRefDecoratedVariable<T>;
+        varName: string, initValue: T, watchFunc?: WatchFuncType): ILocalStoragePropRefDecoratedVariable<T>;
 
   /**
    * Create a LocalStorageLink variable instance.
@@ -1027,14 +1024,13 @@ export declare interface IStateMgmtFactory {
    * @param { string } propName - property name.
    * @param { string } varName - state variable name.
    * @param { T } initValue - init value.
-   * @param { Type } ttype - value type
    * @param { WatchFuncType } [watchFunc] - watch type
    * @returns { ILocalStorageLinkDecoratedVariable<T> } LocalStorageLink instance
    * @syscap SystemCapability.ArkUI.ArkUI.Full
    * @since 20
    */
    makeLocalStorageLink<T>(owningView: ExtendableComponent, propName: string,
-        varName: string, initValue: T, ttype: Type, watchFunc?: WatchFuncType): ILocalStorageLinkDecoratedVariable<T>;
+        varName: string, initValue: T, watchFunc?: WatchFuncType): ILocalStorageLinkDecoratedVariable<T>;
 
   /**
    * Create a Local variable instance.
diff --git a/api/arkui/stateManagement/storage/localStorage.d.ets b/api/arkui/stateManagement/storage/localStorage.d.ets
index 4ddea45ee6a853c58ea43f43a4e65b7a441c6be1..5a02a1a379ac25cbcaf7ab67cc5884996d8eb2d7 100644
--- a/api/arkui/stateManagement/storage/localStorage.d.ets
+++ b/api/arkui/stateManagement/storage/localStorage.d.ets
@@ -18,7 +18,7 @@
  * @arkts 1.2
  */
 
-import { IStorageProperties, AbstractProperty, SubscribedAbstractProperty } from './storageProperty';
+import { AbstractProperty, SubscribedAbstractProperty } from './storageProperty';
 
 /**
  * LocalStorage
@@ -37,24 +37,23 @@ export declare class LocalStorage {
    * initialize with all properties and their values that Object.keys(params) returns
    * Property values must not be undefined.
    *
-   * @param { Record<string, IStorageProperties> } [initializingProperties] - Record<string, IStorageProperties> 
-   * containing keys and values. 
+   * @param { Record<string, Any> } [initializingProperties] - Record<string, Any>
+   * containing keys and values.
    * see set() for valid values
    * @syscap SystemCapability.ArkUI.ArkUI.Full
    * @since 20
    */
-  public constructor(initializingProperties?: Record<string, IStorageProperties>);
+  public constructor(initializingProperties?: Record<string, Any>);
   /**
    * Obtain a handler or an alias to LocalStorage property with given name.
    *
    * @param { string } propName LocalStorage property name
-   * @param {Type} ttype - data type
    * @returns { AbstractProperty<T> | undefined } AbstractProperty object if property with given name exists
    * return undefined otherwise.
    * @syscap SystemCapability.ArkUI.ArkUI.Full
    * @since 20
    */
-  public ref<T>(propName: string, ttype: Type): AbstractProperty<T> | undefined;
+  public ref<T>(propName: string): AbstractProperty<T> | undefined;
   /**
    * Obtain a handler or an alias to LocalStorage property with given name.
    *
@@ -62,18 +61,16 @@ export declare class LocalStorage {
    *
    * @param { string } propName LocalStorage property name
    * @param { T } defaultValue If property does not exist in LocalStorage,
-   *        create it with given default value.
-   * @param {Type} ttype - data type
+   *        create it with given default value.pe
    * @returns { AbstractProperty<T> } AbstractProperty object
    * @syscap SystemCapability.ArkUI.ArkUI.Full
    * @since 20
    */
-  public setAndRef<T>(propName: string, defaultValue: T, ttype: Type): AbstractProperty<T>;
+  public setAndRef<T>(propName: string, defaultValue: T): AbstractProperty<T>;
   /**
    * Create and return a two-way sync "(link") to named property
    *
    * @param { string } propName - name of source property in LocalStorage
-   * @param { Type } ttype - data type
    * @returns { SubscribedAbstractProperty<T> | undefined } instance of  SubscribedAbstractProperty<T>
    *           return undefined if named property does not already exist in LocalStorage
    *           Apps can use SDK functions of base class SubscribedPropertyAbstract<T>
@@ -81,7 +78,7 @@ export declare class LocalStorage {
    * @crossplatform
    * @since 20
    */
-  public link<T>(propName: string, ttype: Type): SubscribedAbstractProperty<T> | undefined;
+  public link<T>(propName: string): SubscribedAbstractProperty<T> | undefined;
 
   /**
    * Like see link(), but will create and initialize a new source property in LocalStorage if missing
@@ -89,13 +86,12 @@ export declare class LocalStorage {
    * @param { string } propName - name of source property in LocalStorage
    * @param { T } defaultValue - value to be used for initializing new property in LocalStorage
    *        default value must be of type T, can be undefined or null.
-   * @param { Type } ttype - data type
    * @returns { SubscribedAbstractProperty<T> } instance of  SubscribedAbstractProperty<T>
    *          Apps can use SDK functions of base class SubscribedAbstractProperty<T>
    * @syscap SystemCapability.ArkUI.ArkUI.Full
    * @since 20
    */
-  public setAndLink<T>(propName: string, defaultValue: T, ttype: Type): SubscribedAbstractProperty<T>;
+  public setAndLink<T>(propName: string, defaultValue: T): SubscribedAbstractProperty<T>;
 
   /**
    * Check if LocalStorage has a property with given name
@@ -103,23 +99,21 @@ export declare class LocalStorage {
    * same as ES6 Map.prototype.has()
    *
    * @param { string } propName - searched property
-   * @param { Type } [ttype] - data type
    * @returns { boolean } true if property with such name exists in LocalStorage
    * @syscap SystemCapability.ArkUI.ArkUI.Full
    * @since 20
    */
-  public has(propName: string, ttype?: Type): boolean;
+  public has(propName: string): boolean;
   /**
    * Returns value of given property
    * return undefined if no property with this name
    *
    * @param { string } propName - property name
-   * @param {Type} ttype - data type
    * @returns { T | undefined } property value if found or undefined
    * @syscap SystemCapability.ArkUI.ArkUI.Full
    * @since 20
    */
-  public get<T>(propName: string, ttype: Type): T | undefined;
+  public get<T>(propName: string): T | undefined;
   /**
    * Set value of given property in LocalStorage
    * Method sets nothing and returns false if property with this name does not exist in LocalStorage
@@ -139,12 +133,11 @@ export declare class LocalStorage {
    *
    * @param { string } propName
    * @param { T } newValue - must be of type T, can be undefined or null
-   * @param { Type } ttype - data type
    * @returns { boolean } true on success, i.e. when above conditions are satisfied, otherwise false
    * @syscap SystemCapability.ArkUI.ArkUI.Full
    * @since 20
    */
-  public setOrCreate<T>(propName: string, newValue: T, ttype: Type): boolean;
+  public setOrCreate<T>(propName: string, newValue: T): boolean;
   /**
    * Provide names of all properties in LocalStorage
    * same as ES6 Map.prototype.keys()
diff --git a/api/arkui/stateManagement/storage/persistentStorage.d.ets b/api/arkui/stateManagement/storage/persistentStorage.d.ets
index fcb91d1ec523ca4c97f9436b0cde85ca23dc8999..b9bda0af68625a680c2907a93eefc848a370fe11 100644
--- a/api/arkui/stateManagement/storage/persistentStorage.d.ets
+++ b/api/arkui/stateManagement/storage/persistentStorage.d.ets
@@ -33,7 +33,6 @@ export declare class PersistentStorage {
    * with given value
    *
    * @param { string } key - property name
-   * @param { Type } ttype - persist value type
    * @param { T } defaultValue - If AppStorage does not include this property it will be initialized with this value
    * @param { ToJSONType<T> } [toJson] - serialization function
    * @param { FromJSONType<T> } [fromJson] - deserialization function
@@ -42,8 +41,7 @@ export declare class PersistentStorage {
    * @syscap SystemCapability.ArkUI.ArkUI.Full
    * @since 20
    */
-  static persistProp<T>(key: string, ttype: Type, defaultValue: T, 
-      toJson?: ToJSONType<T>, fromJson?: FromJSONType<T>): boolean;
+  static persistProp<T>(key: string, defaultValue: T, toJson?: ToJSONType<T>, fromJson?: FromJSONType<T>): boolean;
 
   /**
    * Reverse of @see persistProp
diff --git a/api/arkui/stateManagement/storage/storageProperty.d.ets b/api/arkui/stateManagement/storage/storageProperty.d.ets
index 191374a7e22d6df9a5e8b2507bed8f5d68382f05..56e874225e9da9a8b8aa7b5aaec03adb14d9d1b5 100644
--- a/api/arkui/stateManagement/storage/storageProperty.d.ets
+++ b/api/arkui/stateManagement/storage/storageProperty.d.ets
@@ -49,15 +49,6 @@ export interface AbstractProperty<T> {
    * @since 20
    */
    info(): string { return ""; };
-  
-  /**
-   * Returns the type of the referenced property
-   *
-   * @returns { Type } type of the referenced property
-   * @syscap SystemCapability.ArkUI.ArkUI.Full
-   * @since 20
-   */
-   ttype(): Type { return Type.of(undefined); };
 
   /**
    * Reads value of the referenced AppStorage/LocalStorage property.
@@ -115,30 +106,4 @@ export interface SubscribedAbstractProperty<T> extends AbstractProperty<T> {
    * @since 20
    */
   aboutToBeDeleted(): void {};
-}
-
-/**
- * Define IStorageProperties interface
- *
- * @interface IStorageProperties
- * @syscap SystemCapability.ArkUI.ArkUI.Full
- * @since 20
- */
-export interface IStorageProperties {
- /**
-  * Storage value.
-  *
-  * @type { NullishType }
-  * @syscap SystemCapability.ArkUI.ArkUI.Full
-  * @since 20
-  */
-  value: NullishType;
- /**
-  * Storage variable ttype.
-  *
-  * @type { Type }
-  * @syscap SystemCapability.ArkUI.ArkUI.Full
-  * @since 20
-  */
-  ttype: Type;
 }
\ No newline at end of file