How to stop further use of a project on requisitions.

EBS 12.2.5

I would be grateful for any pointers on project configuration which would enable the following behaviour;

We raise requisitions and code them to project/task/expenditure type.

Standard POs are created from the requisitions and the POs are subsequently receipted. We then generate receipt accruals using the standard PO 'Receipt Accruals Period End' process.

We interface the receipt accruals to Oracle Projects as cost distribution lines using PRC: Transaction Import.

We also use PRC: Interface Supplier Costs to PA for the related AP invoices, matched to the POs.

And then PRC: Submit Interface Streamline Processes (DXM option) and PRC: Update Project Summary Amounts.