Going Live with Your Application
Once you've finished coding and debugging your application (including testing all your PayPal NVP/SOAP API calls in the Sandbox), go live by moving your application to PayPal's production environment.
Go Live checklist
After you've finished testing your application in the PayPal Sandbox, move it into the production environment so you can process live transactions. This quick-reference checklist provides an overview of how to successfully take your application live.