If you're not comfortable using Keygen or prefer an official solution, you may want to consider:

Using keygens or pirated software can lead to:

Searching for a "keygen" or unauthorized license for is generally discouraged due to security risks, including malware and data loss. Instead, you can find legitimate versions and updates directly from the official provider. MyBusiness POS 2012 & v24 Overview

Are you having you already own?