Solution : https://service.sap.com/sap/support/notes/98431 (SAP Service marketplace login required)
Key words : 
additional key words component supplier settlement, relevant sis statistics, attached program correction, jit delivery schedule, component suppliers, correction delivery, delivery schedule, program error, scheduling agreement, open quantities
Related Notes : 
       
| 204130 | SIS update: Collective note | 
| 130342 | Incoming orders not deleted when doc. deleted | 
| 125763 | SIS: Collective note - component supplier | 
| 92361 | Sched.agrmnts open qty/credit value in sched.lines | 
| 84112 | Schedule for scheduling lines |