How can we capture project cost against Receiving BU using Global Procurement Process?

Summary:

We have a requirement to capture the Project Cost against Receiving BU (Company A) and Provider BU (Company B) is doing the purchasing from the supplier.

Using global procurement process, if we create a PO for supplier for 100$ using the POET details, the Project cost will be 100$ however Provider BU will charge a markup for ex 10% so the intercompany AR invoice is generated for 110$ for company B to invoice company A and intercompany AP invoice will be created for Company A to pay Company B however POET details is not captured/transferred on intercompany transactions. The Project Cost should be 110$ not 100$ since company A liability is 110$. How do we capture the 10$ generated part of the markup to the Project