diff --git a/frameworks/ets/ets/@ohos.notificationManager.ets b/frameworks/ets/ets/@ohos.notificationManager.ets
index 1bd0e6d84443b487e9ee475f9ba542d95b7dc582..d7606aceadd60811e970347bdff406ca6d2bacde 100644
--- a/frameworks/ets/ets/@ohos.notificationManager.ets
+++ b/frameworks/ets/ets/@ohos.notificationManager.ets
@@ -678,8 +678,7 @@ export default namespace notificationManager {
         let p = taskpool.execute((): number => { return nativeGetSlotNumByBundle(bundle); });
         p.then((data: NullishType): void => {
             let ret : number = data as number;
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, ret);
+            callback(null, ret);
         }, (error: Error): void => {
             let ret: number = -1;
             let err: BusinessError = error as BusinessError;
@@ -701,8 +700,7 @@ export default namespace notificationManager {
         }
         let p = taskpool.execute((): void => { return nativeSetSlotByBundle(bundle, slot); });
         p.then((data: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Error): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -735,8 +733,7 @@ export default namespace notificationManager {
         }
         let p = taskpool.execute((): void => { return nativeRemoveAllSlots(); });
         p.then((data: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Error): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -761,8 +758,7 @@ export default namespace notificationManager {
         }
         let p = taskpool.execute((): void => { return nativeRemoveSlot(slotType); });
         p.then((data: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Error): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -801,8 +797,7 @@ export default namespace notificationManager {
         let p = taskpool.execute((): Array<NotificationSlot> => { return nativeGetSlots(); });
         p.then((data: NullishType): void => {
             let ret : Array<NotificationSlot> = data as Array<NotificationSlot>;
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, ret);
+            callback(null, ret);
         }, (error: Error): void => {
             let ret : Array<NotificationSlot> = [];
             let err: BusinessError = error as BusinessError;
@@ -830,8 +825,7 @@ export default namespace notificationManager {
         let p = taskpool.execute((): NotificationSlot => { return nativeGetSlot(slotType); });
         p.then((data: NullishType): void => {
             let ret : NotificationSlot = data as NotificationSlot;
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, ret);
+            callback(null, ret);
         }, (error: Error): void => {
             let ret : NotificationSlot = { enabled: false, reminderMode: 0, authorizedStatus: 0 } as NotificationSlot;
             let err: BusinessError = error as BusinessError;
@@ -863,8 +857,7 @@ export default namespace notificationManager {
         }
         let p = taskpool.execute((): void => { return nativeAddSlots(slots); });
         p.then((data: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Error): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -897,8 +890,7 @@ export default namespace notificationManager {
         }
         let p = taskpool.execute((): void => { return nativeAddSlotByNotificationSlot(slot); });
         p.then((data: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Error): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -911,8 +903,7 @@ export default namespace notificationManager {
         }
         let p = taskpool.execute((): void => { return nativeAddSlotBySlotType(type); });
         p.then((data: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Error): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -959,8 +950,7 @@ export default namespace notificationManager {
         }
         let p = taskpool.execute((): void => { return nativeSetNotificationEnable(bundle, enable); });
         p.then((data: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Error): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -979,8 +969,7 @@ export default namespace notificationManager {
         let p = taskpool.execute((): boolean => { return nativeIsNotificationEnabledWithBundleOption(bundleOption); });
         p.then((data: NullishType): void => {
             let ret : boolean = data as boolean;
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, ret);
+            callback(null, ret);
         }, (error: Error): void => {
             let ret : boolean = false;
             let err: BusinessError = error as BusinessError;
@@ -1016,8 +1005,7 @@ export default namespace notificationManager {
         let p = taskpool.execute((): boolean => { return nativeIsNotificationEnabledWithId(userId); });
         p.then((data: NullishType): void => {
             let ret : boolean = data as boolean;
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, ret);
+            callback(null, ret);
         }, (error: Error): void => {
             let ret : boolean = false;
             let err: BusinessError = error as BusinessError;
@@ -1047,8 +1035,7 @@ export default namespace notificationManager {
         let p = taskpool.execute((): boolean => { return nativeIsNotificationEnabled(); });
         p.then((data: NullishType): void => {
             let ret : boolean = data as boolean;
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, ret);
+            callback(null, ret);
         }, (error: Error): void => {
             let ret : boolean = false;
             let err: BusinessError = error as BusinessError;
@@ -1088,8 +1075,7 @@ export default namespace notificationManager {
             (): void => { return nativeSetNotificationEnableSlotWithForce(bundle, type, enable, isForceControl);
         });
         p.then((data: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Error): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -1132,8 +1118,7 @@ export default namespace notificationManager {
         }
         let p = taskpool.execute((): void => { return nativeSetNotificationEnableSlot(bundle, type, enable); });
         p.then((data: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Error): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -1170,8 +1155,7 @@ export default namespace notificationManager {
         let p = taskpool.execute((): boolean => { return nativeIsNotificationSlotEnabled(bundle, type); });
         p.then((data: NullishType): void => {
             let ret : boolean = data as boolean;
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, ret);
+            callback(null, ret);
         }, (error: Error): void => {
              let ret : boolean = false;
             let err: BusinessError = error as BusinessError;
@@ -1191,8 +1175,7 @@ export default namespace notificationManager {
         let p = taskpool.execute((): Array<NotificationSlot> => { return nativeGetSlotsByBundle(bundle); });
         p.then((data: NullishType): void => {
             let slots : Array<NotificationSlot> = data as Array<NotificationSlot>;
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, slots);
+            callback(null, slots);
         }, (error: Error): void => {
             let slots : Array<NotificationSlot> = [];
             let err: BusinessError = error as BusinessError;
@@ -1262,8 +1245,7 @@ export default namespace notificationManager {
         }
         let p = taskpool.execute((): void => { return nativePublish(request); });
         p.then((data: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Error): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -1296,8 +1278,7 @@ export default namespace notificationManager {
         }
         let p = taskpool.execute((): void => { return nativePublishWithUserId(request, userId); });
         p.then((data: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Error): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -1397,8 +1378,7 @@ export default namespace notificationManager {
         let p = taskpool.execute((): Array<NotificationRequest> => { return nativeGetAllActiveNotifications(); });
         p.then((data: NullishType): void => {
             let ret : Array<NotificationRequest> = data as Array<NotificationRequest>;
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, ret);
+            callback(null, ret);
         }, (error: Error): void => {
             let retData : Array<NotificationRequest> = [];
             let err: BusinessError = error as BusinessError;
@@ -1441,8 +1421,7 @@ export default namespace notificationManager {
         let p = taskpool.execute((): Array<NotificationRequest> => { return nativeGetActiveNotifications(); });
         p.then((data: NullishType): void => {
             let ret : Array<NotificationRequest> = data as Array<NotificationRequest>;
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, ret);
+            callback(null, ret);
         }, (error: Error): void => {
             let retData : Array<NotificationRequest> = [];
             let err: BusinessError = error as BusinessError;
@@ -1458,8 +1437,7 @@ export default namespace notificationManager {
         let p = taskpool.execute((): number => { return nativeGetActiveNotificationCount(); });
         p.then((data: NullishType): void => {
             let ret : number = data as number;
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, ret);
+            callback(null, ret);
         }, (error: Object): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, -1);
@@ -1489,8 +1467,7 @@ export default namespace notificationManager {
         }
         let p = taskpool.execute((): void => { return nativeDisplayBadge(bundle, enable); });
         p.then((e: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Error): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -1521,8 +1498,7 @@ export default namespace notificationManager {
         let p = taskpool.execute((): boolean => { return nativeIsBadgeDisplayed(bundle); });
         p.then((data: NullishType): void => {
             let ret : boolean = data as boolean;
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, ret);
+            callback(null, ret);
         }, (error: Error): void => {
             let ret : boolean = false;
             let err: BusinessError = error as BusinessError;
@@ -1587,8 +1563,7 @@ export default namespace notificationManager {
         }
         let p = taskpool.execute((): void => { return nativeCancelWithIdLabel(id, label); });
         p.then((data: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Error): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -1601,8 +1576,7 @@ export default namespace notificationManager {
         }
         let p = taskpool.execute((): void => { return nativeCancelWithId(id); });
         p.then((data: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Error): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -1627,8 +1601,7 @@ export default namespace notificationManager {
         }
         let p = taskpool.execute((): void => { return nativeCancelAll(); });
         p.then((data: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Error): void => {
     	    let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -1676,7 +1649,7 @@ export default namespace notificationManager {
                 } else {
                     let result: int = data as int;
                     if (result == 0) {
-                        callback(successCallbackError, undefined);
+                        callback(null, undefined);
                     } else {
                         callback(callbackInternalError, undefined);
                     }
@@ -1803,8 +1776,7 @@ export default namespace notificationManager {
         }
         let p = taskpool.execute((): void => { return nativeSetBadgeNumber(badgeNumber); });
         p.then((data: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Object): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -1852,8 +1824,7 @@ export default namespace notificationManager {
         let p = taskpool.execute((): NotificationRequest => { return nativeGetActiveNotificationByFilter(filter); });
         p.then((data: NullishType): void => {
             let ret : NotificationRequest = data as NotificationRequest;
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, ret);
+            callback(null, ret);
         }, (error: Object): void => {
             let retData: NotificationRequest = {
             content:{},
@@ -1920,8 +1891,7 @@ export default namespace notificationManager {
         }
         let p = taskpool.execute((): void => { return nativeRemoveGroupByBundle(bundle, groupName); });
         p.then((data: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Error): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -1963,8 +1933,7 @@ export default namespace notificationManager {
         }
         let p = taskpool.execute((): void => { return nativePublishAsBundle(request, representativeBundle, userId); });
         p.then((data: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Object): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -2022,8 +1991,7 @@ export default namespace notificationManager {
         }
         let p = taskpool.execute((): void => { return nativeCancelAsBundle(id, representativeBundle, userId); });
         p.then((data: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Error): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -2074,8 +2042,7 @@ export default namespace notificationManager {
         }
         let p = taskpool.execute((): void => { return nativeCancelGroup(groupName); });
         p.then((data: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Object): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -2109,8 +2076,7 @@ export default namespace notificationManager {
         }
         let p = taskpool.execute((): void => { return nativeSetDoNotDisturbDate(date); });
         p.then((data: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Object): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -2145,8 +2111,7 @@ export default namespace notificationManager {
         }
         let p = taskpool.execute((): void => { return nativeSetDoNotDisturbDateWithId(date, userId); });
         p.then((data: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Object): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -2178,8 +2143,7 @@ export default namespace notificationManager {
         let p = taskpool.execute((): DoNotDisturbDate => { return nativeGetDoNotDisturbDate(); });
         p.then((data: NullishType): void => {
             let doNotDisturbDate : DoNotDisturbDate = data as DoNotDisturbDate;
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, doNotDisturbDate);
+            callback(null, doNotDisturbDate);
         }, (error: Object): void => {
             let doNotDisturbDate : DoNotDisturbDate = {};
             let err: BusinessError = error as BusinessError;
@@ -2209,8 +2173,7 @@ export default namespace notificationManager {
         let p = taskpool.execute((): DoNotDisturbDate => { return nativeGetDoNotDisturbDateWithId(userId); });
         p.then((data: NullishType): void => {
             let doNotDisturbDate : DoNotDisturbDate = data as DoNotDisturbDate;
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, doNotDisturbDate);
+            callback(null, doNotDisturbDate);
         }, (error: Object): void => {
             let doNotDisturbDate : DoNotDisturbDate = {};
             let err: BusinessError = error as BusinessError;
@@ -2240,8 +2203,7 @@ export default namespace notificationManager {
         let p = taskpool.execute((): boolean => { return nativeIsSupportDoNotDisturbMode(); });
         p.then((data: NullishType): void => {
             let ret : boolean = data as boolean;
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, ret);
+            callback(null, ret);
         }, (error: Object): void => {
             let ret : boolean = false;
             let err: BusinessError = error as BusinessError;
@@ -2257,8 +2219,7 @@ export default namespace notificationManager {
         let p = taskpool.execute((): boolean => { return nativeIsSupportTemplate(templateName); });
         p.then((data: NullishType): void => {
             let ret : boolean = data as boolean;
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, ret);
+            callback(null, ret);
         }, (error: Object): void => {
             let ret : boolean = false;
             let err: BusinessError = error as BusinessError;
@@ -2463,8 +2424,7 @@ export default namespace notificationManager {
         }
         let p = taskpool.execute((): void => { return nativesetDistributedEnableByBundle(bundle, enable); });
         p.then((data: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Object): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -2478,8 +2438,7 @@ export default namespace notificationManager {
         }
         let p = taskpool.execute((): void => { return nativeSetDistributedEnable(enable); });
         p.then((data: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Object): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -2521,8 +2480,7 @@ export default namespace notificationManager {
         let p = taskpool.execute((): boolean => { return nativeIsDistributedEnabled(); });
         p.then((data: NullishType): void => {
             let ret : boolean = data as boolean;
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, ret);
+            callback(null, ret);
         }, (error: Error): void => {
             let ret : boolean = false;
             let err: BusinessError = error as BusinessError;
@@ -2561,8 +2519,7 @@ export default namespace notificationManager {
         let p = taskpool.execute((): boolean => { return nativeIsDistributedEnabledByBundle(bundle); });
         p.then((data: NullishType): void => {
             let ret : boolean = data as boolean;
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, ret);
+            callback(null, ret);
         }, (error: Error): void => {
             let ret : boolean = false;
             let err: BusinessError = error as BusinessError;
@@ -2611,8 +2568,7 @@ export default namespace notificationManager {
         let p = taskpool.execute((): DeviceRemindType => { return nativeGetDeviceRemindType(); });
         p.then((data: NullishType): void => {
             let ret : DeviceRemindType = data as DeviceRemindType;
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, ret);
+            callback(null, ret);
         }, (error: Error): void => {
             const defaultRemindType: DeviceRemindType = DeviceRemindType.IDLE_DONOT_REMIND;
             let err: BusinessError = error as BusinessError;
@@ -2629,8 +2585,7 @@ export default namespace notificationManager {
         let p = taskpool.execute((): void =>
             { return nativeSetSyncNotificationEnabledWithoutApp(userId, enable); });
         p.then((data: NullishType): void => {
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, undefined);
+            callback(null, undefined);
         }, (error: Error): void => {
             let err: BusinessError = error as BusinessError;
             callback(err, undefined);
@@ -2673,8 +2628,7 @@ export default namespace notificationManager {
         let p = taskpool.execute((): boolean => { return nativeGetSyncNotificationEnabledWithoutApp(userId); });
         p.then((data: NullishType): void => {
             let ret : boolean = data as boolean;
-            let err: BusinessError = {code: 0, data: undefined};
-            callback(err, ret);
+            callback(null, ret);
         }, (error: Error): void => {
             let ret : boolean = false;
             let err: BusinessError = error as BusinessError;
diff --git a/frameworks/ets/ets/@ohos.notificationSubscribe.ets b/frameworks/ets/ets/@ohos.notificationSubscribe.ets
index d3ad2cbc96bf0e727df414f55ba7a1632a3ac3df..1f42a216f1bfba7b32b814976c0c8faba4a91562 100644
--- a/frameworks/ets/ets/@ohos.notificationSubscribe.ets
+++ b/frameworks/ets/ets/@ohos.notificationSubscribe.ets
@@ -91,8 +91,7 @@ export default namespace notificationSubscribe {
         let p = taskpool.execute((): void => { notificationSubscribe.nativeSubscribe(subscriber) });
         p.then(
             (e: NullishType): void => {
-                let err: BusinessError<void> = {code: 0, data: undefined};
-                callback(err, undefined);
+                callback(null, undefined);
             }, (error: Error): void => {
                 let err: BusinessError = error as BusinessError;
                 callback(err, undefined);
@@ -110,8 +109,7 @@ export default namespace notificationSubscribe {
         let p = taskpool.execute((): void => { notificationSubscribe.nativeSubscribe(subscriber, info) });
         p.then(
             (e: NullishType): void => {
-                let err: BusinessError<void> = {code: 0, data: undefined};
-                callback(err, undefined);
+                callback(null, undefined);
             }, (error: Error): void => {
                 let err: BusinessError = error as BusinessError;
                 callback(err, undefined);
@@ -142,8 +140,7 @@ export default namespace notificationSubscribe {
         let p = taskpool.execute((): void => { notificationSubscribe.nativeUnSubscribe(subscriber) });
         p.then(
             (e: NullishType): void => {
-                let err: BusinessError<void> = {code: 0, data: undefined};
-                callback(err, undefined);
+                callback(null, undefined);
             }, (error: Error): void => {
                 let err: BusinessError = error as BusinessError;
                 callback(err, undefined);
@@ -182,8 +179,7 @@ export default namespace notificationSubscribe {
         });
         p.then(
             (e: NullishType): void => {
-                let err: BusinessError<void> = {code: 0, data: undefined};
-                callback(err, undefined);
+                callback(null, undefined);
             }, (error: Error): void => {
                 let err: BusinessError = error as BusinessError;
                 callback(err, undefined);
@@ -223,8 +219,7 @@ export default namespace notificationSubscribe {
         });
         p.then(
             (e: NullishType): void => {
-                let err: BusinessError<void> = {code: 0, data: undefined};
-                callback(err, undefined);
+                callback(null, undefined);
             }, (error: Error): void => {
                 let err: BusinessError = error as BusinessError;
                 callback(err, undefined);
@@ -260,8 +255,7 @@ export default namespace notificationSubscribe {
         });
         p.then(
             (e: NullishType): void => {
-                let err: BusinessError<void> = {code: 0, data: undefined};
-                callback(err, undefined);
+                callback(null, undefined);
             }, (error: Error): void => {
                 let err: BusinessError = error as BusinessError;
                 callback(err, undefined);
@@ -359,8 +353,7 @@ export default namespace notificationSubscribe {
         });
         p.then(
             (e: NullishType): void => {
-                let err: BusinessError<void> = {code: 0, data: undefined};
-                callback(err, undefined);
+                callback(null, undefined);
             }, (error: Object): void => {
                 let err: BusinessError = error as BusinessError;
                 callback(err, undefined);
@@ -396,8 +389,7 @@ export default namespace notificationSubscribe {
         });
         p.then(
             (e: NullishType): void => {
-                let err: BusinessError<void> = {code: 0, data: undefined};
-                callback(err, undefined);
+                callback(null, undefined);
             }, (error: Object): void => {
                 let err: BusinessError = error as BusinessError;
                 callback(err, undefined);
@@ -414,8 +406,7 @@ export default namespace notificationSubscribe {
         });
         p.then(
             (e: NullishType): void => {
-                let err: BusinessError<void> = {code: 0, data: undefined};
-                callback(err, undefined);
+                callback(null, undefined);
             }, (error: Object): void => {
                 let err: BusinessError = error as BusinessError;
                 callback(err, undefined);