Solution : https://service.sap.com/sap/support/notes/496251 (SAP Service marketplace login required)
Key words : 
choose start-> programs -> administrative tools -> local security policy -> security settings -> password policy -> minimum password length, choose mysap technology components --> sap web application server --> client/server technology -> architecture, sap presentation cd c323/jan/03  ii      documentation error22/jan/03  ii      'preparing, patch level07/oct/03  ii    required jdk version03/sep/03  iii    windows server 2003, wrong path12/jul/02   iii    j2ee-java-components/sap j2ee engine cd, generalii     pre-installationiii    installationiv     post-installation     chronological summary, released jdk versions17/jan/03  iii     deploy java core, sapinst displays empty message box09/feb/03  iv      deleting, patch sap j2ee engine/sdm07/jan/03   iv     changing, \usr\sap\<sapsid>\sys\profile\<sapsid>_dvebmgs_<host>
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