We are now running a project to integrate OEX with SAP R/3 4.6c (MM Module). Oracle recommendation includes semiautomatic process associated to the RFQ in SAP and P.O. placement in SAP.
This semiautomatic process is consequence of poor XML integration with some transaction on OEX in which the buyer needs to operate in both systems: SAP and OEX. Nevertheless we are trying to request the incorporation of this changes in OEX's new version.
Its a matter of time that ORACLE will understand that a full integration is needed to satisfy users; SAP has done it and most of ERP transactions can be taken to XML format through their product Business Connector (Original a Webmethods product bought by SAP).
Juan Carlos Blesa