A refinement to one attribute can affect the available refinements for other attributes. This is referred to as an implicit refinement.
For example, if vehicle sales data includes both the make and the model, then when users refine by the vehicle model Mustang, which is produced by Ford, then the make attribute is implicitly refined by Ford.
If the data also includes the sales month, but no Mustangs were sold in January, then January is removed as an available value for the sales month.
Enabling filtering between linked data sets also leads to implicit refinements.
Implicit refinements are not displayed on the Selected Refinements panel. However, if there are no available refinements for an attribute because of implicit refinements, the attribute is disabled, and Studio displays a message explaining that the attribute is not available because of implicit refinements.