# Sandbox OAuth Credentials
source: https://developer.mastercard.com/priceless-planet-carbon-tracker/tutorial/sandbox-access/step5/index.md

## Sandbox OAuth Credentials {#sandbox-oauth-credentials}

1. After the project is successfully created, the Sandbox .P12 access credentials will be available for download as shown in the screenshot below:
2. Click the **Download PKCS#12 Keystore** button to download a zip file containing the .p12 file required for OAuth authentication in Sandbox.
3. Click **Continue** . Note: You are required to capture the Keystore password and key alias shown on the screen. The Keystore password is used in conjunction with the .p12 file and Client ID for OAuth authentication. Click **Confirm** and **Continue** to complete the Sandbox setup process.

![Provide Project Name](https://static.developer.mastercard.com/content/priceless-planet-carbon-tracker/images/tutorials/certificate.png) ![Provide Project Name](https://static.developer.mastercard.com/content/priceless-planet-carbon-tracker/images/tutorials/certificate_2.png) Note: No test data setup is required once Sandbox keys are downloaded. You can refer to the [Integration and Testing](https://developer.mastercard.com/priceless-planet-carbon-tracker/tutorial/api-testing/index.md) section for testing the Carbon Calculator Experience APIs.