Design Studio – Error Configuration SSO with O OLAP Connection

Hi all,

I have a problem with OLAP Connection with SSO in SAP Design Studio 1.5:

Our Configuration  :

1. SAP BusinessObjects BI Platform 4.1 Support Pack 5 Patch 3
2. BI Platform Add-on For Design Studio
3. SAP  Design Studio  1.5  : Client Single
4. Sign On Token Service on the BI4 platform

Procedure :

1. Add data source  with connection OLAP with login and password is ok
2. Add data source with OLAP connection with sso, I get the message error :

           Failed to obtain SAP Assertion Ticket for connection "AAA". Check the server-side SSO configuration for user "ZZZ"

My OLAP connection with SSO work fine with WebIntelligence and OLAP Analysis . any help please ?

Best regards

ELYAE