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Glenn Nyhan 91Glenn Nyhan 91 

Process Builder and Lookup Fields - Adding Contacts to a Campaign

I set up a Process Builder process where when a Staff contact record is created and 3 fields are populated by the admin the contact is automatically added to our newsletter campaign. Now I'd like to use the same process but with a twist where when the contact is created and comes into the system a lookup searches to see if a contact already exists and updates that contact record if so. Is this possible? Thanks in advance for any help. 
ANUTEJANUTEJ (Salesforce Developers) 
Hi Glenn,

As stated in https://salesforce.stackexchange.com/questions/203999/find-duplicate-opportunity-with-process-builder#:~:text=The%20best%20you%20can%20write,record%20and%20can%20compare%20them. it would be much preferable to write a trigger to check the duplicate and incase if there are any you could write the logic to update the existing values.

I hope this helps and in case if this came in handy could you please choose this as best answer so that it can be used by others in the future.