Solution : https://service.sap.com/sap/support/notes/1023699 (SAP Service marketplace login required)
Key words : 
/instguides     -> sap netweaver 2004s     -> release 2004s     -> maintenance     -> sps <current_sp_number>     -> netweaver 2004s support package stack guide -          sps<current_sp_number> update procedure, trex_rfc_index_table index_package_size default 200mb trexrfcserver fix, rfc communication' trex python admin tool, aggregation call trex python admin tool, support package reason, supportpackages stack guide, showing precise logon failed reasons, tempindexes-unload warnings eliminated trexindexserver, index unload counter fixed trexrfcserver, installed trex bia instances
Related Notes : 
       
| 883726 | BIA 7.00: Central Note SAP NetWeaver BI accelerator |