Hello Victor,
That error usually indicates you need an additional license to access the data. When using StreetMap Premium in ArcGIS Pro, there are two licenses that authorize different features: a data license (file ending in .sdlic) and the extension. Here is a little matrix that explains the licensing requirements of StreetMap Premium features: https://doc.arcgis.com/en/streetmap-premium/get-started/license-reqs.htm
If you trying to use the Routing_ND in the Standard SMP file geodatabase, you will need to add a data license (sdlic) that corresponds to the StreetMap Premium release you are using.
If you are Custom Roads SMP file geodatabase for routing, you will need to enable the StreetMap Premium extension as per: https://pro.arcgis.com/en/pro-app/latest/help/data/streetmap-premium/get-started-with-streetmap-prem...
Best,
Megan