Solution : https://service.sap.com/sap/support/notes/954718 (SAP Service marketplace login required)
Key words : 
/jspm/deployversionrule = updatesameandlower/jspm/forcemode = trueto, /usr/sap/<sid>/<central instance, bc-upg-ocs-spj component, >/j2ee/jspm/param/jspm_config, jspm configuration file, erp2004 business package, business unit analyst 2, delivered uwl configuration, affected business packages, configuration files
Related Notes : 
       
| 993993 | mySAP ERP 2005 SP Stack 7 (12/2006) Release Information Note | 
| 972113 | mySAP ERP 2005 SP Stack 6 (09/2006) Release Information Note | 
| 956755 | Installation guide IS-FS-CM for ERP2005 Value Pack 1 | 
| 918921 | Add. info. on upgrading to SAP ERP Java Components 6.0 SR1 |