# ApiPeriodV2010PeriodAccountPeriodCallPeriodUserDefinedMessage ## Properties Name | Type | Description | Notes ------------ | ------------- | ------------- | ------------- **account_sid** | Option<**String**> | Account SID. | [optional] **call_sid** | Option<**String**> | Call SID. | [optional] **sid** | Option<**String**> | User Defined Message SID. | [optional] **date_created** | Option<**String**> | The date this User Defined Message was created. | [optional] [[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)