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I'm trying to create a validation rule that when an opportunity is closed won will not save if the "Contract_Start_Date__c" and "Contract_End_Date_c" is not populated.

I have this:

Contract_Start_Date__c=null || Contract_End_Date__c=null

No syntax errors, but it does not work.

I also have this:

AND(ISPICKVAL(StageName, "Closed Won"),
  (Contract_Start_Date__c=null || Contract_End_Date__c=null))

No syntax errors there either, but it did not work either. :-(

Any advice to correct these?

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1 Answer 1

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Use ISBLANK() formula instead of comparing to null.

AND(ISPICKVAL(StageName, "Closed Won"), ISBLANK(Contract_Start_Date__c) || ISBLANK(Contract_End_Date__c))
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  • I did notice it would not work until I deactivated another validation rule I had on another field. I would have thought I could have multiple validation rules that will prevent Users from closing an Opportunity "Closed Won".
    – Orquidea Perez
    Nov 29, 2016 at 17:40

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