RLS utilizes filters to restrict data access (usually based on roles). If your filter result returns no rows, as would be when an employee is labeled under a region that is not in your data, that employee will see exactly that - nothing.
Here is a quick theoretical example. Let’s say your filter DAX look like this:
[SalesRegion]=”Value”
If your employee in question is assigned to “Europe” the RLS filter will return the following result:
SalesRegion=”Europe”
…and if “Europe” is not in your underlaying data, then that filter will return no rows (and that is exactly what this employee will see (no rows/nothing).
Quick note - You can check if your role/RLS is acting as expected in Power BI Service. To do that, in Power BI Service, select More options (...) next to the role and then select Test data as role
Important point to remember: If you have configured the workspace so that members have edit permissions, the RLS roles will not be applied to them. Users will be able to see all of the data regardless of your RLS settings. So doubl-check that configuration if your RLS is not working as expected.
The above is a general answer. To enable a more focused answer please provide more detail (your DAX filter, your security table, etc.)
Cheers,
Vera
