Solution : https://service.sap.com/sap/support/notes/659396 (SAP Service marketplace login required)
Key words :
menu option 'goto -> variables -> characteristic variables', external data interface -> maintain transfer rules', menu path 'tools -> data transfer, external data transfer takes place, terms external data transfer, external data transfer differs, rule type 'set variable', external data transfer, systems -> data transfer, displaying input fields
Related Notes :
| 376756 | Incoming order: Classifictns updated incorrectly II |