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Thank you for contacting Syncfusion Support.
We have already logged a feature report for “Find and Replace” support in SfSpreadsheet and a support incident has been created under your account to track the status of this requirement. Please log on to our support website to check for further updates.https://www.syncfusion.com/account/login?ReturnUrl=/support/directtrac/incidentsRegards,Kanimozhi B