Navigational in multiprovider
Should i mark attribute as nav attr in cube and multiprovider also in addition to infoobject.
Report is on multiprovider
The Multi provider do not have data as such....But when you execute a query it searches the fact tables, DIM tables and related master data tables( of the cubes, ODS) in the runtime to answer your query
We define navigation attributes and dimensions in the multi provider structure to predefine how the data needs to be fetched for the queries
If you have navigation attribute for a master data info object, the definition is universally applicable
If you don't want that attribute navigation functionality locally for the multi provider, you can just make it a display attribute. You can mark this as navigation attribute as your require locally for this multi provider