Solution : https://service.sap.com/sap/support/notes/1590998 (SAP Service marketplace login required)
Key words :
Customs log, customs, log, determination, preference determination, ENPR, RMPREFDI, MMPREF_PRO_02, MMPREF_PRO_IDX, Unicode, VEPR
Related Notes :
1310720 | Collection Note for Unicode Systems with different endianess |