Obtain Test Credentials: Within your Portal settings, you’ll find sandbox API keys (client ID/secret).
Authenticate: Use these keys to call POST /auth/token and obtain a JWT.
Create a Payment Intent: Try making a POST /intents/payment request to set up a sample payment flow.
Embed Hosted Checkout: Redirect or link your users to the Hosted Checkout Page using the returned intent_id.
Process Transactions: In test mode, confirm you can authorize, partially capture, void, or refund transactions through the relevant API calls (or Portal actions).
Check the Portal: View your test transactions in the Portal to verify operations and statuses.