# #3 Register a customer sandbox environment for Continuous Deployment using S2S
*Prerequisites: A completed [scenario 2](AddATestApp.md), an Microsoft Entra application registration, and an online sandbox environment called QA with the setup for S2S as specified in task 1 and 2 [here](https://go.microsoft.com/fwlink/?linkid=2217415&clcid=0x409) completed.

> [!NOTE]
> For access to environments, environment secrets, and deployment branches in private or internal repositories, you must use GitHub Pro, GitHub Team, or GitHub Enterprise. (see [this](https://go.microsoft.com/fwlink/?linkid=2216857&clcid=0x409)). We are considering adding a secondary option for listing environments.

1. On github.com, open **Settings** and **Environments** in your project. Click **New Environment** and specify the **name of the environment** you have created in your tenant.
![Add Environment](https://github.com/microsoft/AL-Go/assets/10775043/ec3d7bf3-84dd-4ca4-8c6c-b79d796afadf)
1. Under **Environment secrets**, choose the **Add Secret** action. Create a secret called **AUTHCONTEXT**, and enter a **COMPRESSED JSON** construct with 3 values: TenantID (where the environment lives), ClientID, and ClientSecret (from the pre-requisites), like:
`{"TenantID":"<TenantID>","ClientID":"<theClientID>","ClientSecret":"<theClientSecret>"}`. 
![Add Environment](https://github.com/microsoft/AL-Go/assets/10775043/79d41d03-7b94-4876-a44b-a4276473147a)
1. Navigate to **Actions**, select the **Publish To Environment** workflow and choose **Run workflow**. Enter **latest** in the **App version** field and the **name of your environment** or keep the * in the **environment to receive the new version** field. Click **Run workflow**.
![Add Environment](https://github.com/microsoft/AL-Go/assets/10775043/f207e06b-451d-4e31-8938-2c72f14c2527)
1. When the workflow completes, you can inspect the output of the workflow.
![Add Environment](https://github.com/microsoft/AL-Go/assets/10775043/fb6e4b5d-ce7b-4e9b-8f2d-ae07b554083f)
1. And/or you can open the QA environment, navigate to Customers and see that your very own Hello World message appears.
![Add Environment](https://github.com/microsoft/AL-Go/assets/10775043/eed622b5-4299-4474-8a73-8eb9ce1b288c)

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