| callback | AsyncCallback\<[WorkInfo](#workinfo)> | Yes | Callback used to return the result. Returns the task status obtained from the **WorkSchedulerService** if the specified task ID is valid; returns **null** otherwise.|
| callback | AsyncCallback\<[WorkInfo](#workinfo)> | Yes | Callback used to return the result. Returns the task status obtained from the **WorkSchedulerService** if the specified task ID is valid; throws an exception otherwise. |
**Error codes**
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@@ -178,7 +178,7 @@ Obtains the latest task status. This API uses a promise to return the result.
| Promise\<[WorkInfo](#workinfo)> | Promise used to return the result. Returns the task status obtained from the **WorkSchedulerService** if the specified task ID is valid; returns **null** otherwise.|
| Promise\<[WorkInfo](#workinfo)> | Promise used to return the result. Returns the task status obtained from the **WorkSchedulerService** if the specified task ID is valid; throws an exception otherwise. |