Test Connector error; Single Sign On configuration

Hi,

I did a test on my SAP BI query system created in the portal. When I perform the "Test Connector with Connector" results are as follows;

Test Connection with Connector

Test Details:

The test consists of the following steps:

1. Retrieve the default alias of the system

2. Check the connection to the backend application using the connector defined in this system object

Results

Retrieval of default alias successful

Connection failed. Make sure that Single Sign-On is configured correctly

So my SSO is not configured correctly. Does anyone know where in the portal I can check my SSO configuration and what to look for?