Connect > Orders > Sandbox 

Orders in the sandbox environment work the same way as live orders, except for the fact that they are created and only accessed within the sandbox environment.

To create an order in the sandbox, you will need at least one product to be able to finish a purchase within the sandbox. Once you have created a product, you may create as many orders as you would like. You can then visit the order's details page and perform the same order actions as you would on a live order.

In case you would like to access the sandbox order via our API:s, please refer to the order documentation presented in our help section. You can find the relevant article here.

Important note: When accessing sandbox orders via API, you must perform your HTTP requests against the following URL: 
https://integration-admin.marketplace.cdon.com

Should you wish to access orders or perform actions on orders via our APIs, please use your Sandbox API key.

The key is found in Connect > Orders > Sandbox > Help