Learn about process improvement for referencing data from Revit to Inventor.
The capability for referencing Revit data in Inventor utilizes an installed Revit component that is release-matched to Inventor. If, during installation, the Revit to Inventor Interoperability option was deselected and the Revit component not installed or was removed at some point, you can now install it on-the-fly.
In the past, you would have to stop what your doing and take the necessary steps to change the Inventor installation to include the Revit component option. That is no longer the case.