Hi Sreehari,
are you talking about ERP or CRM? CRM offers a new stateless remote Pricing API for price determination and price calculation.
This API allows you to call the IPC Pricing Engine of SAP CRM from an external application (e.g. 3rd party web shop). The complete documentation of this new Stateless Pricing API, including a full source code example, is available in the SAP note 1849765. Maybe this information is helpful for you.
Best regards,
Baris Yalcin