# DePeriodMittwaldPeriodV1PeriodInvoicePeriodContractItemInvoiceDefinition ## Properties Name | Type | Description | Notes ------------ | ------------- | ------------- | ------------- **contract_item_id** | [**uuid::Uuid**](uuid::Uuid.md) | | **is_due** | Option<**bool**> | | [optional] **service_date** | Option<**String**> | | [optional] **service_period** | [**models::DePeriodMittwaldPeriodV1PeriodInvoicePeriodDatePeriod**](de.mittwald.v1.invoice.DatePeriod.md) | | **vat_rate** | **i32** | | [[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)