Prevent Access to certain data in Report

Ok, I came up with a solution to this that doesnt involve RLS.

I wanted to combine columns from the base (Property) and snowflake parent (Congressional District) in a single table visual but I want to mask the Congressional District values for users NOT privileged to see them (this is for source system module licensing reasons).

So, I ended up creating measures on the snowflake Dim ("Congressional District") called "XXX_Restricted", where "XXX" is one of fields in the table.  The measures look at a custom table that contains the names of the users who should have access to that data.

If the current PBI user (USERPRINCIPALNAME()) is not found in the access table, the measure value will be set to blank, otherwise set to the snowflake value ("Congressional District Member", for example).

The "XXX_Restricted" Measure looks like this:

CD_Member_Restricted = 
IF (
	CONTAINS (V_User_Access_Config,[Data_Object_Name],"<object name>",[Users_ID],USERPRINCIPALNAME())
,	SELECTEDVALUE('V_Dim_Congressional_District_Test'[CD_Member])
,	BLANK()
)

I just need to find a good way to allow the business to manage the User Access list.  I'm hoping they can create a table in the source system that I can sync w/ ETL in the Warehouse, giving them the control over its contents.

Kudos to David Eldersveld for stoking the idea:

https://dataveld.com/2018/02/09/masking-measure-values-in-analysis-services-and-power-bi/