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Devadarsi Devasis 9Devadarsi Devasis 9 

How to Update Contact’s Information (Name, Phone, Email) on Case fields (Web Name, Web Phone, Web Email) when a Case is inserted or updated with Contact using apex triggers

ShirishaShirisha (Salesforce Developers) 
Hi Devdarsi,

Greetings!

Please find the sample contact insertion code in the below link:

https://trailblazer.salesforce.com/ideaView?id=087300000006tuC

Kindly mark it as best answer if it helps so that it can help others in the future.

Warm Regards,
Shirisha Pathuri