Solution : https://service.sap.com/sap/support/notes/46128 (SAP Service marketplace login required)
Key words : 
additional key words subsequent settlement, symptom error message mn, corrected purchasing document &, prerequisites program error, solution program repair, volume rebate arrangements, invoice verification document, invoice document &, error occurs, program rwmbon04
Related Notes : 
       
| 46612 | Itemization arrangements purchasing incorrect | 
| 40147 | Collective note: Subsequent settlement (Purch.) Release 3.0 |