When you enter your serial number for Sound Forge Audio Studio 12, many products come up to choose from. How do I know which one I have? The choices are:
Those letters you quote in your post are shorthand names for countries: DE, Germany; II (honestly not sure); JP, Japan; ES, Spain; PT, Portugal; BR, Brazil; FR, France. So nothing to do with the choosing of a product!
So, please give us a lot more details of what you are trying to do!