Default System Alias

Hi,

I am working on EP 6.0 SP2 Patch 4 Hotfix 8.

I have created four system aliases for one SAP system under the system landscape.

However, only the default system alias is available for usermapping and i am unable to see the other three aliases in the usermapping section of the portal.

As a result i am not able to carry out the user mapping for four different backend users with the same portal user id.

Any help would be greatly appreciated.

Regards,

Vibhu