Solution : https://service.sap.com/sap/support/notes/941602 (SAP Service marketplace login required)
Key words : 
package creation procedure, parallel processing reason, code page belonging, solution manual correction, call transaction se11, convert text data, 'text language' field, language field, text table, thelogon language
Related Notes : 
       
| 480671 | The Text Language Flag of LANG Fields |