India Localization - Internal Requisition - Item Class - Tax does not default

To....India Local Experts

We are on IN60106 on 11.5.10.2 and configured a trading organization in india local which is receiving inventory from USA operating unit.

I understand that Taxes on India Localalization (like Custom Duty etc) can default based on Party Site, Party Null Site or Item Class. I tried the first two scenarios and it works fine i.e. defaulting via Supplier Additional Information or via its null site in P2P cycle. I was also able to get tax defaulted to Purchase Requisitions correctly. However, we need to create Internal Requisitions and default taxes on that as well. No Supplier information is given in Internal Requisitions directly and therefore I pressume that taxes can be defaulted only by way of Item Class which is the third