How to get PO CHANGE HISTORY from back end tables?

Question

Hi All,
I need to get the PO Change history from the back end reason being users want to see not only the change made but who made the changes on those PO's. The PO change history.html doesnot give the information of the user who made changes to the PO. Can any one provide me the query involved in this html page. I can add the updated_by column to that. I built a query already but it is not giving me the field altered on the PO Line.
I learnt that we can get the information from the archive tables but my question is how to know which field has been changed from the original PO to the revised PO. I am unable to figure out if that revision is for Unit Price change or amount change or Bill to change etc. i.e., as it shows in PO change History html page I need to see which field is altered on a particular PO. Is that possible?
Thanks for your help!
Prathima
Message was edited by:
Prathima

Answer 1

Hi Anil,
Turning Audit on PO_LINES_ALL helped to track the changes. I have a problem though.
In the sense - Below is the query I created to track changes on Unit Price of a Po Line.
SELECT
poh.segment1 po_num
,pol.line_num po_line_num
,pola.unit_price price_changed_from
,pol.unit_price price_changed_to
,fnd1.description created_by
,fnd.description last_updated_by
,fnd2.description previously_updated_by
--,decode(pola.audit_transaction_type,'U','UPDATE','I','INSERT') audit_transaction_type
,pol.last_update_date
FROM po.po_lines_all_a pola,po.po_lines_all pol,apps.fnd_user fnd,apps.fnd_user fnd1,po.po_headers_all poh,apps.fnd_user fnd2
WHERE pola.po_line_id = pol.po_line_id
AND pola.audit_transaction_type = 'U'
and poh.po_header_id = pol.po_header_id
AND fnd.user_name = pola.audit_user_name
and pola.unit_price is not null
and fnd1.user_id = pol.created_by
and fnd2.user_id(+) = pola.LAST_UPDATED_BY
Now the problem is
When I update a line twice. intially I changed the unitprice value of line 4 from .72 to 0.8 and later I changed it back to 0.8 to 0.72. Intial Changed to 0.72 shuld be 0.8 but it changed to 0.72 as it is pulling from po_lines_all table. How can you capture that changed to???
po_num Line Changed from Changed to
26603     4     0.72000      0.72000
26603     4     0.80000     0.72000
Please help.
Thanks,
Prathima