How to check workflow status from backend workflow status workflow activity_status

We can check the workflow status from back end also for H
Header or Line with below query.

    SELECT wias.item_key,

         wpa.activity_name,

         wias.activity_status,

         wias.activity_result_code,

         wias.assigned_user,

         wias.begin_date,

         wias.end_date

    FROM WF_ITEM_ACTIVITY_STATUSES wias, WF_PROCESS_ACTIVITIES wpa

   WHERE     wias.process_activity = wpa.instance_id(+)

         AND wpa.process_item_type = wias.item_type

         AND wias.ACTIVITY_STATUS = 'ERROR'

         AND wias.end_date IS NULL

         AND wias.item_key = TO_CHAR (12345)           -- Header_id or Line_id

ORDER BY begin_date DESC