Logins for CIS RPC handling are mapped from the perspective of the local server. You identify a local login and the remote (or external) login that you want the local login to use when it connects to the remote server. The default is to use the local login of the user making the RPC call as the remote login.
Mapping logins for Component Integration Services
Select the remote server icon, then select File | Properties.
Select the CIS Login Mapping tab.
Click the Add button. The Add CIS Mapping dialog box opens.
In the Local Login box, select a login from the drop-down list.
In the remote login box, type the remote login you want the local login to use to connect to the remote server.
Enter and confirm a password for the remote login.