I am trying to create a validation rule to lock down our original utm fields on leads after they are first populated.
Essentially I would like to prevent everyone (including our marketo sync user) but a 'system admin' to be able to update the fields below.
I think I have the Rule down for the most part, but I keep getting a syntax error "Missing ')'", please see below. Any help would be appreciated.
AND( $Profile.Name <> "System Administrator", ISCHANGED( OG_Lead_Source__c ), NOT(ISBLANK(PRIORVALUE( OG_Lead_Source__c ))) ISCHANGED( OG_Lead_Medium__c ), NOT(ISBLANK(PRIORVALUE( OG_Lead_Medium__c ))) ISCHANGED( OG_Lead_Campaign__c ), NOT(ISBLANK(PRIORVALUE( OG_Lead_Campaign__c ))) ISCHANGED( OG_Lead_Content__c ), NOT(ISBLANK(PRIORVALUE( OG_Lead_Content__c ))) ISCHANGED( OG_Lead_Term__c ), NOT(ISBLANK(PRIORVALUE( OG_Lead_Term__c ))) )