Error scheduling dataset with SSO and SAP HANA connection

[Commander Cognos]

Hi everyone,

we are facing an issue scheduling a dataset refresh - manual refresh runs fine. Once we setup a schedule we receive the following error:

XQE-MD-0007 Unable to establish a metadata connection to data souce <path to package>: XQE-JDB-0010 Connection to database with Single Sign On failed

Situation:
IBM Cognos Analytics 11.0.13 Single Sign On (also tested with 11.1.7. FP2)
Data Source: SAP HANA with external namespace authentication (for data security)
Dataset based on DMR package and the SAP connection above.

I tried to renew credentials, however then I receive a popup window to enter my password.

Do have any idea how to resolve this? Btw, scheduling a report is working fine - we only face the issue with datasets.

Thanks and best regards,
CC