Solution : https://service.sap.com/sap/support/notes/52408 (SAP Service marketplace login required)
Key words :
fixing/unfixing items additional key words assembly order, requested date'-> schedule line-> select 'fix date/quantity'->, -> choose 'complete delivery'-> schedule line-> select 'fix date, fix/unfix sales order items, quantity'-> enter-> choose 'complete delivery'->, confirmed schedule line, requested date', schedule line, assembly order, time select
Related Notes :
| 77750 | Third-party/assembly: duplicate confirmation (2) |