# FAQ & Support

- [How to get the token](/resources/faq-and-support/authentication.md): Your access token authorizes you to use the SmartFastPay REST API server. To call a REST API in your integration, exchange your client ID and secret for an access token in an OAuth 2.0 token call.
- [Tests to validate your integration](/resources/faq-and-support/tests-validate-integration.md)
