ESS/MSS: Unable to lookup System 'SAP_WebDynpro_XSS'.

Hi,

When i login as a end user and click ESS/MSS,

then i am getting the error:

"Unable to lookup System 'SAP_WebDynpro_XSS'. Please check the system object and the alias.."

But if i assign "super_admin" role to this end user, then i am able to get the ess/mss screens.

I also tried giving permissions to "everyone" group and selected "read" option to end user. Still i get the same error.

Where else i have to check? or what might be the problem

Pls help out..

Thanks & Regards,

Mahesh.M.R