The requesting principal is not authorized to set group preferred data location

We have our tenant with 4 Geo locations. And inside power automate flow I am sending this Graph Api to create a new security group under specific Geo location:-

but I am getting this error:-

The requesting principal is not authorized to set group preferred data location.

Now if i remove this parameter:-

"preferredDataLocation": "AUS",

the Office 365 group will get created under the default location, but I need to add it to the specific location. the service account running the graph Api call has SharePoint, group and teams admin permissions.

any advice?

Thanks