Add Sandbox Device Code to Terminal Device

Can we add a Sandbox Application Device Code to a Terminal Device (Square Terminal Credit Card Machine | Square Shop)? I tried creating a code, and then adding it to the Device Code section on the Sign-In page. But that failed. Is this possible? Can we use our sandbox credentials to test with an actual physical device?

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No, you cannot use a Sandbox Application Device Code with a physical Square Terminal. The Square Sandbox is a testing environment that doesn’t interact with live bank accounts or real payment cards, and it doesn’t support physical Square hardware. For testing purposes, the Terminal API in the Sandbox supports a collection of special device_id values that you can use to simulate Terminal actions without connecting to a physical Square Terminal.

This answer was reviewed by @Bryan-Square.