1# RunningMultiInstanceInfo (System API)
2
3The RunningMultiInstanceInfo module defines the information of a multi-instance application in the running state.
4
5> **NOTE**
6>
7> The initial APIs of this module are supported since API version 14. Newly added APIs will be marked with a superscript to indicate their earliest API version.
8>
9> The APIs provided by this module are system APIs.
10
11## Properties
12
13**System API**: This is a system API.
14
15**System capability**: SystemCapability.Ability.AbilityRuntime.Core
16
17| Name                     | Type  | Read-Only| Optional | Description      |
18| ------------------------- | ------ | ---- | ---- | --------- |
19| instanceKey | string | Yes| No | Unique instance ID of a multi-instance application.|
20| uid | number | Yes| No | UID of the application.|
21| pids | Array\<number> | Yes| No | Process ID set of the application.|
22
23## How to Use
24
25The **RunningMultiInstanceInfo** struct is obtained from [getRunningMultiAppInfo](js-apis-app-ability-appManager-sys.md#appmanagergetrunningmultiappinfo12) of **appManager**.
26
27**Example**
28
29```ts
30import { appManager } from '@kit.AbilityKit';
31import { hilog } from '@kit.PerformanceAnalysisKit';
32import { BusinessError } from '@kit.BasicServicesKit';
33
34try {
35  let bundleName = "ohos.samples.etsclock";
36  appManager.getRunningMultiAppInfo(bundleName).then((info: appManager.RunningMultiAppInfo) => {
37      hilog.info(0x0000, 'testTag', `getRunningMultiAppInfo success`);
38    }).catch((err: BusinessError) => {
39      hilog.error(0x0000, 'testTag', `getRunningMultiAppInfo error, code: ${err.code}, msg:${err.message}`);
40    })
41} catch (err) {
42  hilog.error(0x0000, 'testTag', `getRunningMultiAppInfo error, code: ${err.code}, msg:${err.message}`);
43}
44```
45