Required permissions for Directory Reports

Hello to all!

A special group with access to the UDM Modules “Users” and “Groups” for user administration should also be able to create reports.
But trying to create a report with user privileges granted by this group, the download fails with a 403 - Forbidden error.
Are there any privileges which has to be granted to the group? I didn’t find any policies pointing to reports.
Report creation as user administrator works fine.

Thanks in advance