When geocoding, you might refer to objects whose names are used for other objects that do not interest you (for example, a city name that is common to two or more states). To eliminate this problem, refine your search by selecting another column (from, typically, another table). To further refine the search, specify the state for each city, rather than just the city name.
If your area of interest is not unique enough for MapInfo Pro to automatically determine the position or location, you will need to refine your geocode search by specifying a particular boundary that contains your area of interest. This will provide MapInfo Pro with geographic locations on where to position your points.