BW 3.X iView

Hi all.

I've created a BW iView into the portal.

Into the iView's properties i've said that use a BW system that accepts SSO authentication (the connection test for this system is all OK).

But when I try to see the iView (was copied into a rol that has assigned to a user) I've got the following error:

Session Management will not work!

Please check the DSM log file for details

You can turn off this alert inside 'Support Desk' -> 'SAP Application'

And when i press the OK button a pop up is open asking me for login.

I wanna know how solve/turn off the alert? and how to configure the iView properties for not logging in again.

Regards

Gregory.