Yuansfer offers a sandbox environment to be used for testing the entire transaction flow and various use cases before deploying your service into a live environment.
You can get a sandbox account easily by applying on Yuansfer Sandbox Application Or click on the "Apply Sandbox Credentials" link below the Sandbox Environment tab to apply.
Live and Sandbox environments have different base URL's, but all API names are the same. You can just use the dedicated secret token for live or sandbox transaction. Requests made with test mode credentials never hit the banking networks and incur no cost.
The base URL of the Sandbox environment API is: https://mapi.yuansfer.yunkeguan.com
Payment Password on Cashier Page