Hi Nagarajan,
have you checked SAP Customer Checkout 1.0 SP03 – SAP Help Portal Page?
After starting customer checkout for the first time, the initial configuration page should open in your web browser. SAP Customer Checkout is released for the Chrome browser.
You'll find details in SAP Customer Checkout Installation Guide, 4.1 Initial Configuration.
Check also the Integration with SAP Customer Checkout guide in the integration framework, choose Scenarios -> Control and for sap.CustomerCheckout, choose the Docu button.
best, peter