Solution : https://service.sap.com/sap/support/notes/444247 (SAP Service marketplace login required)
Key words : 
sap reference img/bw customizing implementation guide/business information warehouse/reporting-relevant settings/web-based settings, sap reference img -> bw customizing implementation guide -> business information warehouse -> reporting-relevant settings -> web reporting, 0b/english/business information warehouse/business explorer/analysis & reporting, 0b/english/ business information warehouse/business explorer/collaboration & distribution, bw administrator workbench            calling bw business explorer analyzer            calling bw workbooks            calling, cross-industry solutions/sap business information warehouse/sap bw 3, calling bw business explorer analyzerthe bw business explorer analyzer, 1080</hostname>         <path>/sap/bw/bex</path>      </webaccesspoint>   </webaccesspoints>   <logonlanguages>      <logonlanguage, 1080</hostname>         <path>/scripts/wgate</path>      </webaccesspoint>      <webaccesspoint category=, bw business explorer web application designerthe enterprise portal
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