Solution : https://service.sap.com/sap/support/notes/449046 (SAP Service marketplace login required)
Key words : 
additional key words sis, communication structures, transaction mcvt, billing document, transaction mcvv, program error, solution implement, attached correction, update simulation, simulation displays
Related Notes : 
       
| 204130 | SIS update: Collective note | 
| 79319 | SIS: Diff. between online/simulation/analysis/reorganization |