validation rule making a field mandatory only if created after specified date

Question

I want to make a field mandatory only on records created after a specified date. So if the opportunity created date is prior to current date then field wouldn't be mandatory but if opp. created date is = current date or later then field is mandatory. Is there a way to write that?

Answer 1

You can try validation rules like;

Error Condition :

AND (NOT( ISNULL(CreatedDate  ) ), (TODAY() > DATEVEALUE(CreatedDate) ), ISNULL(f2__c ) )

NOT( ISNULL(CreatedDate ) ) : Will allow new records to be created without checking for f2__c

TODAY() > DATEVEALUE(CreatedDate) : This will check records that are not created today.