How to clear Receivable and Payable invoices created for internal purposes without GL IC proces

Summary:

How to clear Receivable and Payable invoices created for internal purposes without GL IC proces

Content (please ensure you mask any confidential information):

Customer is in staffing business looking at solution to clear internal AR and AP invoices created without using PPM Intercompany / Inter project billing / advance global intercompany processes.

There is legal entity lets say STAFFING (STA-LE1) bind with legal contract with end customer lets say END CUSTOMER (ENC) but procure resources from another legal entity lets say SERVICE PROVIDER (SRP-LE2). Now in this case Mr.Rajesh is employee of SRP-LE2 legal entity but working with ENC via contract STA-LE1 legal entity. Now Mr.Rajesh work for entire month in JAN-25 with his payroll cost as 5000$ and STA-LE1 billed ENC for 1000$. But SRP-LE2 billed internally to STA-LE1 for service provided by Mr.Rajesh for 8000$. Now with current situation below transactions created in applications.