Automated SAML Logon to SAP Analytics Cloud for headless client

Hello Folks,

we want to move some WebI dashboards that run on some monitors (headless clients) to SAP Analytics Cloud.

SAC is configured for SAML autentication, however SAML logon will expire after 7 days and therefore a re-authentication is required.

Any bright ideas how to do that automatically so that nobody has to connect to the client and do the login?
(headless client is rebooted every night)

With WebI SSO with Active Directory was used and working perfectly.

Thanks for all replies in advance and best regards,

Axel