Solution : https://service.sap.com/sap/support/notes/88110 (SAP Service marketplace login required)
Key words : 
additional key words jva, fi integration manager    20c_hp4, exchange rate differences, split vendor lines, bank lines, jv document, vary widely, payment doc, adjustment line, venture processed
Related Notes : 
       
| 93554 | @3Z@ 4. collective oil fixes/transports after HP34 | 
| 87116 | Split of exchange difference in payment run | 
| 83127 | Recovery Indicator on Payment Program Bank Lines |