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WikWik 

Overriding Save button on Contact page to prevent duplicates

Hi,

How to proceed with the above requirement?

Please let me know some available examples

Thank You
Simon ReparSimon Repar
HI,

are you talking about a case when user clicks two times almost simultaneously and that causes a duplicate or about case where contact is already in sf org and you want to prevent creation?
 
WikWik
Preventing duplicate Contacts in Salesforce.