Return PO Reference Linking and Quantity Validation

[Haily]

Hi Expert

In S/4HANA Cloud Public Edition, is there a field that displays the original purchase order number associated with a return purchase order? Additionally, when a return PO is created by copying from the original purchase order, is there a system control in place to ensure that the return quantity does not exceed the quantity of the original document?

在 S/4HANA Cloud Public 版本中，請問是否有欄位可以顯示與退貨採購單對應的原始正向採購單號？另外，若是從正向採購單複製建立退貨採購單，系統是否有數量不得超過原始單據的控管機制？

Thank you!

[Ndubuisi_PALMER]

Dear Haily

There should a standard way to link a return purchase order to its original purchase order. Have you considered doing below verifications?

1. Original Purchase Order Reference Field:
   When creating a return purchase order, especially via the "Copy" function, the system automatically captures the reference to the original purchase order.
   This reference is visible in the "Reference Document" field (usually available in the PO header or item level, depending on the app used like “Manage Purchase Orders”).
   The field may be labeled as "Reference PO" or appear under document flow or item reference data.

2. System Control for Quantity Consistency:
   SAP S/4HANA Cloud Public Edition does not automatically block users from entering a return quantity that exceeds the quantity of the original PO, unless additional custom logic or validations are implemented (via BAdI or SSCUI restrictions, if available).
   However, when returns are processed against goods receipt (e.g., through material documents), the system will compare the quantity of goods returned to the quantity received and prevent over-returning through standard stock checks and tolerance limits.

Recommendation:

• To enforce strict control, leverage configurable tolerance limits or output controls.
• Consider using apps like “Monitor Purchase Order Items” or “Manage Purchase Orders Centrally” to trace the document flow between the return PO and original PO.

Best regards