I need help with a validation rule, and hoping someone can chime in.
I have a picklist field named "Source" where, if the user chooses "X Value", then "Y field" below the picklist field must be required to fill out.
Any ideas? Thanks.
9 answers
Eric Praud (Activ8 Solar Energies) 
Forum Ambassador
Hi Henry,
Don't use ISNULL, it's been deprecated ages ago:
AND(
ISPICKVAL(Source__c, "X"),
ISBLANK(Yfield__c)
)
