3557221 - Down payment request amount is more than the limit in the related PO allowed

Set a limit of 'Down Payment %' in Purchase Order in "Create Purchase Order" app. At the time of down payment request creation via app "Manage Supplier Down Payment Request" for same PO, the system is allowing to post down payment request more than the amount allowed in the PO.

SAP S/4HANA Public Cloud Edition

purchase order, PO, down payment, down payment request, ME23N, limit, percentage, exceed the limit,  BD_MMPUR_FINAL_CHECK_PO, Final Check before Saving Purchase Order, Badi, validation, F1688, F1 688 , KBA , FI-FIO-AP-PAY-2CL , Payment Apps (Public Cloud) , Problem