I have a requirement to use XML gateway to process inbound invoices from supplier in Oracle ebusiness suite R12. Suppliers will send their invoices to our server in a form of XML file. The file sent will conform to the Oracle standard invoice definition. I have read the Oracle documentation called: Oracle XML Gateway User's Guide Release 12. I still don't get the main steps. So the question is: how do I go about populating the Payables interface tables with data contained in the XML file? Can someone, please, help?