Solution : https://service.sap.com/sap/support/notes/63939 (SAP Service marketplace login required)
Key words :
delete reference field resb-bdmng, enter reference type, additional key words, function module co_it_dum_ass_upd, import parameter dum_bdmng, import parameter, phantom assemblies, production order, dependent components, calculated incorrectly
Related Notes :
| 73033 | Component quantity in production orders |