Questions raised in response to How to Create Invoices from iSupplier Blog

This thread is created so that customers can benefit from the questions and responses that were raised on the following blog entry:

https://blogs.oracle.com/ebs/entry/how_to_create_invoices_from

Q1: This is a very good paper but I would like to know how to deal with creating multiple lines on an invoice, when matching to a PO, where the invoice lines have different Tax Rates

A1: To my knowledge the taxes from PO will default on invoice if “Enforce tax from reference document” is checked in the tax configuration owner options.

So in the case given here, the user should check what is tax on PO lines? Is there different tax on multiple PO line also? Or does the user want to change the tax rate in AP invoice?