3705366 - Advanced Intercompany STO (5HP): New supplier overrides existing one for sales org invoicing after customer master update in SAP S/4HANA Cloud Public Edition

• In SAP S/4HANA Cloud Public Edition  (scope item 5HP), creating a new supplier linked to the existing intercompany customer for a delivering sales organization causes it to become the invoicing party for all intercompany flows from that sales organization including unrelated plant/destination combinations despite STO headers specifying the original plant supplier.
• The sales org 'Customer Interc. Bl.' allows only one entry, so updating the customer master Supplier field triggers universal override across destinations, Hence Invoices switch post-change.

SAP S/4HANA Cloud Public Edition

supplier invoice error, vendor not defined, company code 4400, advanced intercompany stock transfer, STO error, intercompany supplier determination, vendor master data, SAP S/4HANA Cloud Public Edition, 5HP scenario, customer-supplier mapping, intercompany invoice logic , KBA , MM-PUR-GF-STO-2CL , Stock Transfer (Public Cloud) , Problem