# Integration and Testing
source: https://developer.mastercard.com/digital-redemptions/documentation/integration-and-testing/index.md

## Ready to Begin Testing? {#ready-to-begin-testing}

Tip: We recommend that you begin testing in the sandbox.

Once you have created a project on Mastercard Developers, generated sandbox credentials and received approvals, you can start testing.

## Digital Redemptions Service Testing Tutorial {#digital-redemptions-service-testing-tutorial}

Follow our [Digital Redemptions Service Testing Tutorial](https://developer.mastercard.com/digital-redemptions/tutorial/api-testing/index.md) for help. This tutorial explains step by step process to test the Digital Redemptions API by building an end-to-end application

## Next Steps {#next-steps}

* You can head to our [Reference Application](https://developer.mastercard.com/digital-redemptions/documentation/reference-app/index.md) page to download our Spring Boot Application that shows a typical usage of the Digital Redemptions service.
* To learn more about any error codes you receive, head over to our [Codes and Formats](https://developer.mastercard.com/digital-redemptions/documentation/code-and-formats/index.md) section to learn about the details of all the error codes.