Solution : https://service.sap.com/sap/support/notes/327921 (SAP Service marketplace login required)
Key words : 
additional key words debit-side settlement, rebate arrangement maintenance, incorrect condition granter, condition granter, rebate arrangements, error message, pressing enter, solution implement, purchasing organization, implemented note 200188
Related Notes : 
       
| 382749 | Org. data of an arrangement not copied during creation | 
| 200188 | Message NAA234: Rebate arrangement maintenance | 
| 184387 | Debtor w/ incorrct account group creates short dump | 
| 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 |