Query To Identify All Purchase Orders errored out in WF

SELECT pha.segment1, pha.org_id, pha.authorization_status,
ac.display_name activity, ias.activity_result_code RESULT,
ias.error_name error_name, ias.error_message error_message,
ias.error_stack error_stackfrom
FROM po_headers_all pha,
wf_item_activity_statuses ias,
wf_process_activities pa,
wf_activities_vl ac,
wf_activities_vl ap,
wf_items i
WHERE ias.item_type = 'POAPPRV'
AND ias.item_key = pha.wf_item_key
AND ias.item_type = pha.wf_item_type
AND pha.authorization_status IN ('IN PROCESS', 'PRE-APPROVED')
AND ias.activity_status = 'ERROR'
AND ias.process_activity = pa.instance_id
AND pa.activity_name = ac.NAME
AND pa.activity_item_type = ac.item_type
AND pa.process_name = ap.NAME
AND pa.process_item_type = ap.item_type
AND pa.process_version = ap.VERSION
AND i.item_type = 'POAPPRV'
AND i.item_key = ias.item_key
AND i.begin_date >= ac.begin_date
AND i.begin_date
ORDER BY pha.segment1, ias.execution_time