Solution : https://service.sap.com/sap/support/notes/90661 (SAP Service marketplace login required)
Key words : 
additional key words subsequent settlement, error message mn515 'po history, purchase order item, deletion indicator set, volume-based rebate, additionally implement note 92661, vendor business volumes, purchasing document xx, message mn355 ', program error
Related Notes : 
       
| 92661 | Unjustified error message MN515 | 
| 40147 | Collective note: Subsequent settlement (Purch.) Release 3.0 |