SSO with SAP Logon Tickets
we have a portal as a ticket issuing system. We have integrated SAP CRM and SAP BW into our portal. Now the user authenticate himself on the portal. First time the user navigates in the portal to CRM or BW he has to authenticate there with his user-id and password.
This case appears only at the first login to this systems. After the first login SSO will run without problems and the user is automatically authenticated in CRM and BW.
What is our mistake so that every user have to authenticate himself on the CRM or BW if it is his first login?
Please help me!