Solution : https://service.sap.com/sap/support/notes/1158297 (SAP Service marketplace login required)
Key words :
sap netweaver portal, enterprise portal, system issues, error message, find sapwf_sendsessinfo, bbpstart reason, read note 595519, detailed information, bbpstart service, standalone link
Related Notes :
897796 | SRM ITS session not terminated when running within Portal |
595519 |