HMError.Code.alreadyExists An error indicating the container already contains the object you are trying to add. Declarationcase alreadyExists See AlsoRelated DocumentationHomeKit Developer GuideGeneral errorsHMError.Code.genericErrorincompatibleHomeHubHMError.Code.invalidClassHMError.Code.notFoundHMError.Code.notificationAlreadyEnabledHMError.Code.notificationNotSupportedHMError.Code.operationNotSupportedHMError.Code.unexpectedErrorHMError.Code.missingEntitlementHMError.Code.referToUserManual