This flowchart depicts a process of purchase order (PO)-based invoice in SAP S/4HANA for service procurement.

Key Process Flow steps shown in Flowchart;

1. Service Purchase Order Creation (Procurement) in SAP (tcode ME21N) 📝: The purchase department creates a service purchase order against an expense GL and cost center.
2. Advance Payment (Tcode F-48/ME2DP) 💵: If applicable, an advance payment can be made to the service provider.
3. Service Receipt Acknowledgement Against PO (ML81N) 📜: The store department acknowledges the receipt of the service against the PO.
4. Invoice Receipt 🧾: The invoice is received from the service provider.
5. Invoice Verification (tcode MIRO): The account department verifies the invoice by comparing it to the PO and service receipt information. This ensures a three-way match of quantity, price, and description.
6. Invoice Type Determination: After receiving the invoice, the account department determines the invoice type based on its contents:
   • Original Service Invoice: The invoice reflects the agreed-upon price for the services listed in the PO.
   • Unplanned Delivery Cost Invoice: The invoice pertains to unplanned delivery costs not included in the PO.