Solution : https://service.sap.com/sap/support/notes/190902 (SAP Service marketplace login required)
Key words : 
additional key words subsequent settlement, business volume data, volume-based rebate, company code support, rebate arrangement currency, subsequent settlement, support package, program error, t001r-reinh, 'corrections' section
Related Notes : 
       
| 212330 | Rounding taxes in settlement at header level | 
| 183379 | Composite SAP note subsequent settlement (Purchasing) 4.6 | 
| 152725 | Collective note: Subsequent settlement (Purch.) Release 4.5 | 
| 104668 | Collective note: Subsequent settlement (Purch.) Release 4.0 | 
| 40147 | Collective note: Subsequent settlement (Purch.) Release 3.0 |