# ValidationRule A validation rule that can be bound to an action-field. ## Properties Name | Type | Description | Notes ------------ | ------------- | ------------- | ------------- **type** | **String** | The type of the rule. | [optional] **message** | **String** | The error message displayed when the rule isn't fulfilled. | [optional] **active** | **Boolean** | Whether or not this rule is active, meaning it should be applied. | [optional] **messageKey** | **String** | The message key for this rule | [optional] **options** | **Map<String, String>** | An array defining the custom parameters for this rule. | [optional]