Solution : https://service.sap.com/sap/support/notes/490331 (SAP Service marketplace login required)
Key words : 
incorrect values exist, batch-specific units, proportion/product units, rm06i-psbez    space, rm06i-pseff    space, rm06i-pssko    space, function group mepr, function group meko, enter transaction se37, ekpo-meins                            xi_mein2
Related Notes : 
       
| 549013 | Wrong valuation at GR when using batches | 
| 390242 | Conversion factors are not determined for batch | 
| 331712 | Incrct consignment valuatn prices f. proportion/product unit |