I must be going crazy. On an Opportunity I want the Validation Rule to trigger when no Primary Campaign has been selected. This is a Standard Field on the Opportunity so the rule I set up is


but I can still edit and save Opportunities that don't have any Campaign selected. I can't figure out what I am missing. The Standard Field is as such

Label Name DataType Primary Campaign Source Campaign Lookup(Campaign)


1 Answer 1


Instead of using the ISNULL function, you should use the ISBLANK() function. It is better to use it for text fields (lookup is considered as a text field).

Reference: https://help.salesforce.com/apex/HTViewHelpDoc?id=customize_functions_i_z.htm&language=en_US#ISBLANK


You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .