Solution : https://service.sap.com/sap/support/notes/116520 (SAP Service marketplace login required)
Key words : 
tools       -> administration -> administration -> client administration       -> client copy -> local copy, client copy   -   log, additional key words, table t000   -   define, area       'data selection', parameter   login/system_client, user master record', bw production client, chosen production client, client 000 copy
Related Notes : 
       
| 793717 | Client copy into the BW client in Netweaver/mySAP ERP | 
| 308407 | CC-INFO: ERROR: Exit program not found | 
| 116811 | Working with BW in client 000 not possible |