BW System returned state: User_not_Authorized. Warning Eye 007.

I have a webi report(BI SP 4.0) which is made on top of BEX query. When the user executes this report with prompts,

getting this error: 

BW system <system ID> returned state : WARNING EYE (007): You do not have sufficient Authorization.

I did Authorization check for the user with BEx query, NO ERROR.

Is there any suggession/Advise

Thanks

Naveed