Linking PO with Payment

Dear community,

We have 1 Report Requirement as per below,

They want to Track PR, PO, Invoice & Payment in 1 Screen.

we are developing the Report & Managed to do so but for 1 case we could not find any link.

The client has created Invoice  &Matched it at Line level with 2 Different PO lets say A & B.

A has amount 10000

B has amount 20000.

Now this was paid via 1 Payment lets say Payment Number 123. for full amount 30000.

Now in Report when I search for PO A It will show Payment Amount as 30000 & not 10000 as Invoice Payment was 30000 but for Particular PO it was only 10000.