Solution : https://service.sap.com/sap/support/notes/206060 (SAP Service marketplace login required)
Key words : 
additional key words lfm1-bolre, 'subsequent settlement' indicator, deviating vendor data, general purchasing data, lfm2-bolre, purchasing data, vendor master, purchase order, plant level, -range level
Related Notes : 
       
| 309191 | ME47 Take different vendor data into account | 
| 214146 | Vendor master at plant level: No subs. settlement possible | 
| 183379 | Composite SAP note subsequent settlement (Purchasing) 4.6 | 
| 169882 | ME22: Take alternative vendor data into account | 
| 40147 | Collective note: Subsequent settlement (Purch.) Release 3.0 |