An RLS expression filters this aggregation table but not the detail table which is not allowed

[Don-Bot]

I am currently receiving this error message when I try to setup my aggregation table with RLS.  The infuriating part is I am getting this error when I try to setup the exact same RLS that is on the detail table on my aggregation table.  When I click the check mark I get this message and it doesn't work.  Is this some sort of bug?

My Fact table has this RLS:

[Company]=int(UserPrincipalName())

When I try to paste that into the aggregation table I get the below message.  Both tables have the same company field to make this possible.  

[DataInsights · Accepted solution]

@Don-Bot,

Have you tried creating the RLS expression in the dimension table? For example, if your model has the table DimCompany and a relationship to each fact table, then you would create the RLS expression in DimCompany.

[Don-Bot]

I feel like an idiot for not trying that.  Thanks!