Scenario: NAV with test & production environments …using customer license in more databases. …many questions about this topic in Microsoft Dynamics Community.
look at this post: https://community.dynamics.com/nav/f/34/t/186285
“Correct Answer” by Microsoft
“Each Microsoft Dynamics NAV production database requires a separate Microsoft Dynamics NAV license file.”
With one Microsoft Dynamics NAV license, you are allowed to run one Microsoft Dynamics NAV database. If you have multiple Microsoft Dynamics NAV production databases, you must purchase a Microsoft Dynamics NAV license for each database.
You are allowed to use a Microsoft Dynamics NAV license on copies of your Microsoft Dynamics NAV production database as long as the copies of the database are used for:
•Backup
•Storage of historical data
•Testing
•Internal use only development
The databases must not be used in production.
Directly from public Microsoft CustomerSource section: Description of the Number of Databases You Are Allowed to Run with a Microsoft Dynamics NAV License – Microsoft Dynamics CustomerSource