For each validation rule, you select, in the Type column, to display the rule for base entities, parent entities, or both base and parent entities:
If Parent is selected, the validation rule is displayed in the validation report only for entities for which, in the Validation Entity screen, the Type field is set to Parent or All.
If Base is selected, the associated rule is displayed in the validation report only for entities for which, in the Validation Entity screen, the Type field is set to Base or All.
If All is selected, the associated validation rule is displayed in the validation report for all entities, regardless of whether, in the Validation Entity screen, an entity is set to Parent or Base.