The Sandbox Account
A NetSuite sandbox is a safe and isolated account where you can develop new processes and applications. You can use a sandbox to test and train your employees in existing integrations and processes without affecting your production data, so you don't disrupt your business. The data in the sandbox is a copy of your production data. The sandbox can be refreshed from production, bringing in new data and customizations. Each refresh overwrites the previous sandbox. You can purchase one sandbox or several sandboxes to allow for development and testing teams to have their own accounts in which to experiment.
Production and sandbox roles are clearly labeled in the Account Type column on the My Roles page. Account administrators and system administrators can modify the sandbox account name by adding a suffix to help distinguish it from other accounts.
See NetSuite Sandbox for more information.