Resolving ambiguous data source connections
When you open a dashboard or story and there are multiple data source connections and data source sign-ons associated with your credentials, a prompt asks you to resolve the ambiguous connections.
Procedure
When prompted, select a connection to use for your data source, and click
OK.
If your connection also has an ambiguous sign-on, you will get prompted twice; one prompt for the connection and then a second prompt for the sign-on.