I have reference list 1 with primary values, one of which is "Exempt". I have a second reference list that is a child of value "Exempt", which contains a list of valid values for "Exempt" ie types of exemption.
In a business asset, I have added a field that forces a user to select a value from reference list 1. If the user selects value "Exempt", I want to force the user to select a value from the child reference list. I do not want this value/field to be selectable if the user chose a value other than "Exempt" in the first field.
How do I do this?