Solution : https://service.sap.com/sap/support/notes/947153 (SAP Service marketplace login required)
Key words : 
order manager, internal orders, transaction ko04, settlement rule, automatically generated, terms saplkobs, ksr2_orc reason, program error, solution implement, program corrections
Related Notes : 
       
| 967485 | Internal order: Automatic generation with BAPI | 
| 840350 | Settlement rule of internal order- automatic generation via | 
| 503993 | Claim: Settlement rule not taken from strategy sequence |