Hi Sumit:
Since Tata Technologies is an Ariba partner, you can access extensive documentation on integration at Ariba Connect. If you do not have access to Connect, submit a New User request from the login screen.
You can also contact the Ariba Partner Support team at SRMCloudEnablement_PartnerSupport@sap.com for further assistance.
Cheers,
Debbie Curtis-Magley
SAP Ariba Exchange Community Manager