Solution : https://service.sap.com/sap/support/notes/44961 (SAP Service marketplace login required)
Key words : 
additional key words contract, sales information system, sales order statistics, symptom incoming orders, prerequisites transaction group 4, sales orders, transaction group 4, service contracts, solution corrected, advance correction
Related Notes : 
       
| 204130 | SIS update: Collective note | 
| 133939 | SIS: No update for contracts | 
| 119217 | |
| 81485 | Open delivery value for rejected contracts | 
| 70798 | |
| 53193 |