A QuickBooks Online Sandbox account will help you test Routable Sandbox in a secure fashion that does not affect your real books, or move real funds.

Create a QBO developer account

Visit [Intuit Developer(https://developer.intuit.com/app/developer/homepage) and click Sign Up in the top right corner to create your account.

Create a Sandbox account

1. Click on your name and select Sandbox

You will see a list of your sandbox accounts -- If you don't see one, click Add.

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QBO sandboxes are forever

They will keep growing indefinitely and while it possible to delete all the data in it, there is some you will need to recreate. For more information see Sandbox Deletion