Issue brief : On executing any Web Template/Query we got the below shown error message.
Solution: SAP recommendeds following setting to be maintained to avoid this error
Related SAP NOTES and Reference Links
Note 589272 – Suggests us to set the STATELESS=X with USE_PAGE_WRAPPER = X (Session management for BW iView with frames or role menu)
Note 738034 give more details of the Session management for BW iView with frames or role menu
Below link gives detailed explanation on the STATELESS and USE_PAGE_WRAPPER