Solution : https://service.sap.com/sap/support/notes/752843 (SAP Service marketplace login required)
Key words :
//<bsp_server>/sap/bw/doc/tmpl/fldtmpl/latest/latest_mytemplate/, sap/bw/doc/tmpl service, //<bsp_server>/sap/bw/bex, precalculated web template reason, http error 403 - forbidden, cmd=ldocdata_mode=static, data_mode=static parameter, service nodes, data_mode=static, precalculated data
Related Notes :
| 603624 | HTTP error 403 - Forbidden / You are not authorized to view |