# BillingPreviewAttachLineItem ## Fields | Field | Type | Required | Description | | -------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------- | | `title` | *str* | :heavy_check_mark: | N/A | | `description` | *str* | :heavy_check_mark: | N/A | | `amount` | *float* | :heavy_check_mark: | N/A | | `discounts` | List[[models.BillingPreviewAttachDiscountResponse](../models/billingpreviewattachdiscountresponse.md)] | :heavy_minus_sign: | N/A | | `plan_id` | *str* | :heavy_check_mark: | N/A | | `total_quantity` | *float* | :heavy_check_mark: | N/A | | `paid_quantity` | *float* | :heavy_check_mark: | N/A | | `deferred_for_trial` | *Optional[bool]* | :heavy_minus_sign: | N/A | | `effective_period` | [Optional[models.BillingPreviewAttachEffectivePeriod]](../models/billingpreviewattacheffectiveperiod.md) | :heavy_minus_sign: | N/A | | `is_base` | *Optional[bool]* | :heavy_minus_sign: | N/A |