Query behind the PO Release -> Tools -> View Document
In Oracle ebs R12 we have some reports like the above.
form name: POXPOERL
view name: PO_RELEASE_XML
SELECT text FROM all_views WHERE view_name = 'PO_RELEASE_XML';
We can select the text for the view. Run the query, if there is any error on our report, by running the query for that release or po id. we can find out the error.