Trying to connect to oracle with Pentaho Ketlle and failed

So I was trying to connect to a Oracle database when I got this error

Connection failed. Verify all connection parameters and confirm that the appropriate driver is installed.
Listener refused the connection with the following error:
ORA-12505, TNS:listener does not currently know of SID given in connect descriptor
 

The configuration for the connection that I have is using the "Service Name" so in this case is an easy fix, just put a "/" in the beginning , like this.