E-recruiting on ERP2004 on ESS and MSS

Hi Experts,

I am trying to use E-rec services On ESS -> career and Jobs.

I am referring to http://help.sap.com/saphelp_erp2004/helpdata/en/38/e8584c2a664547b60442646bee23b6/frameset.htm

and i have changed the client for BSP applications as suggested. Now when i am hosting career and job. it taked me to a screen where i have to enter service and system. I am unable to understand why this error is coming.

Can any one of you share your experiences on the same problem. also if there any document available on the same.

Thanks and regards,

Sudhir