They are None: No Validation Independent: Validates from LOV Dependent: based on parent value set. Table: Validates from application table. Special: These are the values that use of flex field values. Pair: A pair can be defined as the set of values that make use of flex fields. Translated Independent: This is a kind of value that can be made used only if there is any existence for the input in the list that is defined previously. Translatable dependent: In this kind of validation rules compare the input with the subset of values associated with the previously defined list.