Hello @prakash.balusamy,
The quickest an the easiest way to search up available DSS content is to refer to DATASCOPE SELECT DATA CONTENT GUIDE and to search tab Field Descritions for the relevant info, in this case I would try to find Interest Rates.
For a more in-depth content questions, such as when unable to find the relevant field(s) in the content guide, or the included field description does not allow with the complete understanding if the field is correct for the use case, and sampling/requesting the content for verification is not sufficient, the most comprehensive answers on the content are available from Refinitiv Helpdesk -> Content online, or by calling the local Helpdesk number and Involving Refinitiv content group that is expert in this specific type of content.
Hope this helps you to proceed on interest rates?