N/task Module
task.SearchTaskStatus
Object Description: The status of an asynchronous search task (task.SearchTask) placed into the NetSuite task queue. To initiate the task and retrieve the task ID, use SearchTask.submit().
Supported Script Types: Server scripts For more information, see SuiteScript 2.0 Script Types.
Module: N/task Module
Since: 2017.1
Search NetSuite - https://system.netsuite.com/app/help/helpcenter.nl?search=task.SearchTaskStatus

// Code Example 1

// Add additional code

//...

var searchTaskStatus = task.checkStatus({

    taskId: 51

});



if (searchTaskStatus.status === task.TaskStatus.FAILED) {

    // Handle the task failure

}

//...

// Add additional code



//SOURCE: https://system.netsuite.com/app/help/helpcenter.nl?fid=section_4799344334.html