Hi Raja
Please cross check that system is on recent support pack and has applicable SAP notes installed.
Another important point in SPRO settings make Security concept as Current Procedure with Analysis Authorizations. It should resolve the issue, Still some error then check for auth relevant char. in report and check if it is restricted in AA.
Also check if that char is made auth relevant in RSD1.
then system must restrict the report access.
k/r,
Suresh