Hi Triple9
On you dropdown field you should have following rules:
1st Condition: checkboxField = TRUE and dropdownField
is blank -> ScreenTip Value //validation rule
2nd Condition: checkboxField = FALSE -> Disable Control
//disable control rule
In your case on select field: Disable if nothing to report -
should be change to False
Required
- Value = True and Subject is blank
Hope this will help
Regards, Marcin (Please mark as helpful or answered if it helps)