3585066 - Error "Item 00000 of purchasing document & does not exist" in Manage Supplier Down Payments App

An issue arises when attempting to process a vendor down payment request with reference to a Purchase Order (PO) in the Manage Supplier Down Payment Requests App. The system doesn't allow proceeding without selecting a Purchasing Document Item number.

SAP S/4HANA Public Cloud Edition

1. Enter Manage Supplier Down Payment Requests App and post a vendor down payment.
2. Enter PO number without entering the PO Doc. Item number.
3. The error message occurs: "Item 00000 of purchasing document & does not exist."

The system requires both the PO number and Item number to be entered in the FI document. If only the PO is entered without the item, functions like PO history update would not work, leading to the error message.

This is the standard system behavior. Always enter both the PO number and Item during down payment creation.

Manage Supplier Down Payment Requests App, vendor down payment request, Purchase Order, Purchasing Document Item, mandatory field, error message, ME706, FI document, PO history update, EBELN, EBELP, Special GL indicator, F1688, F1 688 , KBA , FI-FIO-AP-PAY-2CL , Payment Apps (Public Cloud) , Problem