Map visualization limits and issues

I have an excel spreadsheet that I am testing out the map visualization with. the total dataset is less than 40K lines in 4 columns (Quarter-Year, State, Zip, and Value). When I import the data into the PowerBI desktop application and attempt to use the Map visualization, it gives me an error that the Zip Codes contain too many values (even though there are only ~7000 unique values in the Zip column)

Also - if I want to do a map by State, how do I get PowerBI to recognize that "PR" is the abbreviation for Puerto Rico and not the Brazilian state of Parana (there are other cases of this as well)