How to establish a link between a PO receipt and AP invoice

Hi,

For project related expenditures we have identified that for certain expenditures only the 'PO receipt' button is enabled, while 'AP Invoice' button is grayed out on the Project status inquiry while checking for Actuals.

On further checking this we found that whenever we have multiple invoices for a single PO receipt then this happens. We have raised an Enhancement request for providing the information of multiple invoices. ER number 20203175 .

Now we have  a requirement for developing a report that would identify all the payments done on a project. If the expenditure line is coming for single invoice this information can easily be computed, but when we have actuals identified at PO receipt level then we have to establish a link between the PO and corresponding invoice.