Hi @Kamatham Sumana 

Yes you have OOTB Predictive intelligence capability to identify duplicate ideas. please check the below docs link to configure

https://www.servicenow.com/docs/bundle/yokohama-it-business-management/page/product/innovation-manag...

Predictive Intelligence for Innovation Management has the following benefits:

• Improves the quality of your idea database by avoiding duplicate ideas.
• Suggests related ideas to help you identify similar ideas and merge duplicate ideas.

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