Intercompany Billing for multiple Receiving OUs from same provider OU

HI,

I have a query related to PA Intercompany Billing feature.

Our solution is like this: With in Same Ledger > Several OUs setup > each OU is a LE itself.

Now, PA module to be setup for 3 OUs of them, which are in same ledger.

So, the cross charge transactions are to be done across these OUs, and to be billied also, which is Intercompany Setup, since they are from different LEs.

I understand that, we have to create a single fixed project for each OU (by mentiong only one customer for this fixed intercom project), to bill PA Internal invoices for cross charged transactions.