There are lots of documents out there to help you with customizing the PO PDF in Oracle...these are some of the ones I referred to most often when I worked on getting ours switched over to a custom BI Template. (You don't mention that you are using BI Publisher, but it is pretty simple to get working so that's the route I would take unless you are very familiar with XSL stylesheets)
Master Troubleshooting Guide for POXPOPDF: PO Output for Communication (Doc ID 1375082.1)
Frequently Asked Questions POXPOPDF: PO Output for Communication (Doc ID 1532387.1)
This note gives you information for the custom hook...if you need to include other information on your PO template that isn't available in the seeded xml:
PO PDF XML Generation Custom Hook (Doc ID 1946377.1)
Lastly I didn't use this one since we went with BI, but it looks pretty helpful if you choose to go the xsl route.
Hope that helps,
Thanks for your reply.
We use BI Publisher for a number of custom reports, included the custom version of printed pdf PO.
So the custom pdf for our Company is allready developed and Works fine.
The next step is to use the custom pdf other areas of Oracle Purchasing instaed of the standard pdf.
It seems like this is described in the link you sent to the document "Build Your XML Reports" by
changing the pdf layout in the setup form for PO document types.
Thank you for your assistance.