Solution : https://service.sap.com/sap/support/notes/361549 (SAP Service marketplace login required)
Key words :
additional key words va02, setting 'sales order', sales/distribution, sales document, distribution item, manually change, material bom, added anew, item number, error occurs
Related Notes :
365327 | Incorrect components in sales order for SET processing |
362284 | Sales order (Set): Endless loop |
332577 | Configuration is lost for changes II |
325706 | Configuration is lost when you make changes |