It could be one of two things.  First the system you are working on is registered as a Test or Development system.  The other possible issue is the license you use to register your production database is no longer valid and needs to be updated with Sage.  I would first check within Maintain Site to see what license is being used.  If using a production license, try to register your system to see if that clears up the problem.  If not, I would suggest contacting Sage customer support at that point.