I have a SQL 2016 SP1 SSAS Tabular Instance. I've deployed a model with the following properties
When I try to process the database or a table I get an error "The datasource contains an ImpersonationMode that is not supported for processing operations".
But if I change the impersonation info on the connection properties to use the service account instead of the current user it works fine.
We also don't get this issue if we change the Default Mode to DirectQuery instead of import, but we need to use Import because we need to use DAX username function for row level security.
I am an admin on the SSAS instance and also an admin on the SQL Server instance that is the data source. Why can't I process the SSAS tabular model as my user?