Solution : https://service.sap.com/sap/support/notes/885955 (SAP Service marketplace login required)
Key words : 
terms tlsy7 language import smlt rstlan_import_ocs postlanguageimport sem-bw400 fin-basis300 reason, tp postlanguageimport <req> < sid> pf=<pfad-zu-tp_domain_xxx, /usr/sap/put/log directory, product fixbuffer version basis ecc 5, srm 400 sr1 netweaver ´04/webas 640, fin-basis 3, automatic post-import, source release basis 620, target release basis 640, dictionary import log
Related Notes : 
       
| 882871 | SEM-BW400/FINBASIS300: New languages/missing translations | 
| 877049 | Subsequent language installation for BI_CONT | 
| 826092 | Add. info. on upgrading to SAP ERP Central Component 6.0 | 
| 813658 | Repairs for upgrades to products based on SAP NW 2004s AS | 
| 788218 | Add. info. on upgrading to SAP ERP Central Component 5.0 SR1 | 
| 775047 | Add. info. on upgrading to SAP Web AS 6.40 SR1 | 
| 724419 | Upgrade to SAP SEM Release 4.0 | 
| 663240 | Repairs for upgrade to Basis 640 | 
| 432272 | Transporting language data using tp/R3trans |