Solution : https://service.sap.com/sap/support/notes/89673 (SAP Service marketplace login required)
Key words : 
additional key words web, individual component values occurs, deliver incorrect subtotals, condition type kumu, function module sd_order_create, header totals formation, incorrect values, order header, totals fields, condition schema
Related Notes : 
       
| 107056 | Pricing in SD_ORDER_CREATE |