Solution : https://service.sap.com/sap/support/notes/920524 (SAP Service marketplace login required)
Key words :
menu path -> 'business object element assignments' -> 'node assignments, menu option -> 'maintain node assignment', 'open business object enhancement' button, execute transaction /bopf/conf_ui, 'business object' dialog box, '/scdl/pdo_hdr' node, '/scdl/pdo_itm' node, business object, quantity offsetting reason, transport request appears
Related Notes :
1071644 | BOPF: Manually implementing notes/importing Support Packages |