N/task Module
task.CsvImportTaskStatus
Object Description: The status of a CSV import task placed into the NetSuite scheduling queue. Use task.checkStatus(options) with the unique ID for the CSV import task to get the CsvImportTaskStatus object. For a complete list of this object’s properties, see CsvImportTaskStatus Object Members.
Supported Script Types: Server scripts For more information, see SuiteScript 2.0 Script Types.
Module: N/task Module
Since: 2015.2
Search NetSuite - https://system.netsuite.com/app/help/helpcenter.nl?search=task.CsvImportTaskStatus

// Code Example 1

//Add additional code

//...

var csvTaskStatus = task.checkStatus({

    taskId: csvTaskId

    });

if (csvTaskStatus.status === task.TaskStatus.FAILED)

//...

//Add additional code



//SOURCE: https://system.netsuite.com/app/help/helpcenter.nl?fid=section_4345798793.html