Solution : https://service.sap.com/sap/support/notes/393937 (SAP Service marketplace login required)
Key words : 
additional key words fkrel='i', credit price multiplied, individual payment dates, open delivery values, open delivery, open credit, payment dates, dates exist, billing plan, confirmed quantity
Related Notes : 
       
| 425523 | Collection of consulting notes: Credit update | 
| 378398 | Credit update for down payment requests |