# Use the Sample Service ID
source: https://developer.mastercard.com/mastercard-checkout-solutions/tutorial/generate_test_dpas/step3/index.md

### Use the Sample serviceId {#use-the-sample-serviceid}

To call the DPA Registration API in the Sandbox, you will require a sample `serviceId` value. Along with the test DPA data, a sample `serviceId` is available for your initial testing in the Sandbox environment. For more information on the usage of `serviceId` refer to [Enroll Card API](https://developer.mastercard.com/mastercard-checkout-solutions/documentation/api-reference/apis/index.md#card).

![ServiceId](https://static.developer.mastercard.com/content/mastercard-checkout-solutions/img/serviceid.png "ServiceId and Program Name")