Hi,
you must use an alert because in there is no open PR alert the alert managemnt.
Here is an example of the alert:
select distinct a.DocNum,a.DocDate,a.U_SOL_PREPARED_BY
from oprq a inner join prq1 b on a.docentry = b.docentry
where a.docstatus='O' and b.LineStatus = 'O'
Rgds,
Jimmy