# Adds the unit label parameter to the product data hash ## What’s new Adds the ability to specify a product’s unit of measurement using the new `unit_label` parameter in the `product_data` hash. ## Impact You can now specify the `unit_label` when you create a Product by adding a line item to a Checkout Session, Payment Link, Payment Intent, or Invoice. You must include the product’s unit of measurement to meet the requirements of card network Level 2/Level 3 programs. ## Changes #### REST API | Parameter | Change | Resources or endpoints | | ------------ | ------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `unit_label` | Added | [Checkout.Session#create.line_items[].price_data.product_data](/api/checkout/sessions/create?api-version=2025-09-30.preview#create_checkout_session-line_items-price_data-product_data), [Checkout.Session#update.line_items[].price_data.product_data](/api/checkout/sessions/update?api-version=2025-09-30.preview#update_checkout_session-line_items-price_data-product_data), [Invoice#add_lines.lines[].price_data.product_data](/api/invoice-line-item/bulk?api-version=2025-09-30.preview#bulk_invoice-lines-price_data-product_data), [Invoice#update_lines.lines[].price_data.product_data](/api/invoice-line-item/invoices/update-lines/bulk?api-version=2025-09-30.preview#bulk_invoice-lines-price_data-product_data), [InvoiceLineItem#update.price_data.product_data](/api/invoice-line-item/update?api-version=2025-09-30.preview#update_line_item-price_data-product_data), [PaymentLink#create.line_items[].price_data.product_data](/api/payment-link/create?api-version=2025-09-30.preview#create_payment_link-line_items-price_data-product_data) | #### Ruby | Parameter | Change | Resources or methods | | ------------ | ------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `unit_label` | Added | [Checkout::Session::CreateParams::LineItem::PriceDatum::ProductDatum](/api/checkout/sessions/create?api-version=2025-09-30.preview#create_checkout_session-line_items-price_data-product_data), [Checkout::Session::UpdateParams::LineItem::PriceDatum::ProductDatum](/api/checkout/sessions/update?api-version=2025-09-30.preview#update_checkout_session-line_items-price_data-product_data), [Invoice::AddLinesParams::Line::PriceDatum::ProductDatum](/api/invoice-line-item/bulk?api-version=2025-09-30.preview#bulk_invoice-lines-price_data-product_data), [Invoice::UpdateLinesParams::Line::PriceDatum::ProductDatum](/api/invoice-line-item/invoices/update-lines/bulk?api-version=2025-09-30.preview#bulk_invoice-lines-price_data-product_data), [InvoiceLineItem::UpdateParams::PriceDatum::ProductDatum](/api/invoice-line-item/update?api-version=2025-09-30.preview#update_line_item-price_data-product_data), [PaymentLink::CreateParams::LineItem::PriceDatum::ProductDatum](/api/payment-link/create?api-version=2025-09-30.preview#create_payment_link-line_items-price_data-product_data) | #### Python | Parameter | Change | Resources or methods | | ------------ | ------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `unit_label` | Added | [Invoice.AddLinesParamsLinePriceDatumProductDatum](/api/invoice-line-item/bulk?api-version=2025-09-30.preview#bulk_invoice-lines-price_data-product_data), [Invoice.UpdateLinesParamsLinePriceDatumProductDatum](/api/invoice-line-item/invoices/update-lines/bulk?api-version=2025-09-30.preview#bulk_invoice-lines-price_data-product_data), [InvoiceLineItem.ModifyParamsPriceDatumProductDatum](/api/invoice-line-item/update?api-version=2025-09-30.preview#update_line_item-price_data-product_data), [PaymentLink.CreateParamsLineItemPriceDatumProductDatum](/api/payment-link/create?api-version=2025-09-30.preview#create_payment_link-line_items-price_data-product_data), [checkout.Session.CreateParamsLineItemPriceDatumProductDatum](/api/checkout/sessions/create?api-version=2025-09-30.preview#create_checkout_session-line_items-price_data-product_data), [checkout.Session.ModifyParamsLineItemPriceDatumProductDatum](/api/checkout/sessions/update?api-version=2025-09-30.preview#update_checkout_session-line_items-price_data-product_data) | #### PHP | Parameter | Change | Resources or methods | | ------------ | ------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | `unit_label` | Added | [Checkout\Session.create().$params.line_item.price_datum.product_datum](/api/checkout/sessions/create?api-version=2025-09-30.preview#create_checkout_session-line_items-price_data-product_data), [Checkout\Session.update().$params.line_item.price_datum.product_datum](/api/checkout/sessions/update?api-version=2025-09-30.preview#update_checkout_session-line_items-price_data-product_data), [Invoice.add_lines().$params.line.price_datum.product_datum](/api/invoice-line-item/bulk?api-version=2025-09-30.preview#bulk_invoice-lines-price_data-product_data), [Invoice.update_lines().$params.line.price_datum.product_datum](/api/invoice-line-item/invoices/update-lines/bulk?api-version=2025-09-30.preview#bulk_invoice-lines-price_data-product_data), [InvoiceLineItem.update().$params.price_datum.product_datum](/api/invoice-line-item/update?api-version=2025-09-30.preview#update_line_item-price_data-product_data), [PaymentLink.create().$params.line_item.price_datum.product_datum](/api/payment-link/create?api-version=2025-09-30.preview#create_payment_link-line_items-price_data-product_data) | #### Java | Parameter | Change | Resources or methods | | ----------- | ------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `unitLabel` | Added | [InvoiceAddLinesParams.lines[].price_data.product_data](/api/invoice-line-item/bulk?api-version=2025-09-30.preview#bulk_invoice-lines-price_data-product_data), [InvoiceLineItemUpdateParams.price_data.product_data](/api/invoice-line-item/update?api-version=2025-09-30.preview#update_line_item-price_data-product_data), [InvoiceUpdateLinesParams.lines[].price_data.product_data](/api/invoice-line-item/invoices/update-lines/bulk?api-version=2025-09-30.preview#bulk_invoice-lines-price_data-product_data), [PaymentLinkCreateParams.line_items[].price_data.product_data](/api/payment-link/create?api-version=2025-09-30.preview#create_payment_link-line_items-price_data-product_data), [checkout.SessionCreateParams.line_items[].price_data.product_data](/api/checkout/sessions/create?api-version=2025-09-30.preview#create_checkout_session-line_items-price_data-product_data), [checkout.SessionUpdateParams.line_items[].price_data.product_data](/api/checkout/sessions/update?api-version=2025-09-30.preview#update_checkout_session-line_items-price_data-product_data) | #### Node.js | Parameter | Change | Resources or methods | | ------------ | ------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `unit_label` | Added | [Checkout.SessionCreateParams.line_items[].price_data.product_data](/api/checkout/sessions/create?api-version=2025-09-30.preview#create_checkout_session-line_items-price_data-product_data), [Checkout.SessionUpdateParams.line_items[].price_data.product_data](/api/checkout/sessions/update?api-version=2025-09-30.preview#update_checkout_session-line_items-price_data-product_data), [InvoiceAddLinesParams.lines[].price_data.product_data](/api/invoice-line-item/bulk?api-version=2025-09-30.preview#bulk_invoice-lines-price_data-product_data), [InvoiceLineItemUpdateParams.price_data.product_data](/api/invoice-line-item/update?api-version=2025-09-30.preview#update_line_item-price_data-product_data), [InvoiceUpdateLinesParams.lines[].price_data.product_data](/api/invoice-line-item/invoices/update-lines/bulk?api-version=2025-09-30.preview#bulk_invoice-lines-price_data-product_data), [PaymentLinkCreateParams.line_items[].price_data.product_data](/api/payment-link/create?api-version=2025-09-30.preview#create_payment_link-line_items-price_data-product_data) | #### Go | Parameter | Change | Resources or methods | | ----------- | ------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | | `UnitLabel` | Added | [CheckoutSessionLineItemPriceDataProductDataParams](/api/checkout/sessions/create?api-version=2025-09-30.preview#create_checkout_session-line_items-price_data-product_data), [InvoiceAddLinesLinePriceDataProductDataParams](/api/invoice-line-item/bulk?api-version=2025-09-30.preview#bulk_invoice-lines-price_data-product_data), [InvoiceLineItemPriceDataProductDataParams](/api/invoice-line-item/update?api-version=2025-09-30.preview#update_line_item-price_data-product_data), [InvoiceUpdateLinesLinePriceDataProductDataParams](/api/invoice-line-item/invoices/update-lines/bulk?api-version=2025-09-30.preview#bulk_invoice-lines-price_data-product_data), [PaymentLinkLineItemPriceDataProductDataParams](/api/payment-link/create?api-version=2025-09-30.preview#create_payment_link-line_items-price_data-product_data) | #### .NET | Parameter | Change | Resources or methods | | ----------- | ------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | `UnitLabel` | Added | [CheckoutSessionLineItemPriceDataProductDataOptions](/api/checkout/sessions/create?api-version=2025-09-30.preview#create_checkout_session-line_items-price_data-product_data), [InvoiceLineItemPriceDataProductDataOptions](/api/invoice-line-item/update?api-version=2025-09-30.preview#update_line_item-price_data-product_data), [InvoiceLinePriceDataProductDataOptions](/api/invoice-line-item/bulk?api-version=2025-09-30.preview#bulk_invoice-lines-price_data-product_data), [PaymentLinkLineItemPriceDataProductDataOptions](/api/payment-link/create?api-version=2025-09-30.preview#create_payment_link-line_items-price_data-product_data) | ## Upgrade #### REST API 1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench. 1. If you use an SDK, upgrade to the corresponding SDK version for this API version. - If you don’t use an SDK, update your [API requests](https://docs.stripe.com/api/versioning.md) to include `Stripe-Version: 2025-09-30.preview` 1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md). 1. [Test your integration](https://docs.stripe.com/testing.md) against the new version. 1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md). 1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours. Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md). #### Ruby 1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench. 1. Upgrade your Ruby SDK to [v16.1.0-beta.1](https://github.com/stripe/stripe-ruby/releases/tag/v16.1.0-beta.1) 1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md). 1. [Test your integration](https://docs.stripe.com/testing.md) against the new version. 1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md). 1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours. Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md). #### Python 1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench. 1. Upgrade your Python SDK to [v13.1.2b1](https://github.com/stripe/stripe-python/releases/tag/v13.1.2b1) 1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md). 1. [Test your integration](https://docs.stripe.com/testing.md) against the new version. 1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md). 1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours. Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md). #### PHP 1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench. 1. Upgrade your PHP SDK to [v18.1.0-beta.1](https://github.com/stripe/stripe-php/releases/tag/v18.1.0-beta.1) 1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md). 1. [Test your integration](https://docs.stripe.com/testing.md) against the new version. 1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md). 1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours. Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md). #### Java 1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench. 1. Upgrade your Java SDK to [v30.1.0-beta.1](https://github.com/stripe/stripe-java/releases/tag/v30.1.0-beta.1) 1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md). 1. [Test your integration](https://docs.stripe.com/testing.md) against the new version. 1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md). 1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours. Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md). #### Node.js 1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench. 1. Upgrade your Node SDK to [v19.2.0-beta.1](https://github.com/stripe/stripe-node/releases/tag/v19.2.0-beta.1) 1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md). 1. [Test your integration](https://docs.stripe.com/testing.md) against the new version. 1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md). 1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours. Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md). #### Go 1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench. 1. Upgrade your Go SDK to [v83.1.0-beta.1](https://github.com/stripe/stripe-go/releases/tag/v83.1.0-beta.1) 1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md). 1. [Test your integration](https://docs.stripe.com/testing.md) against the new version. 1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md). 1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours. Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md). #### .NET 1. [View your current API version](https://docs.stripe.com/upgrades.md#view-your-api-version-and-the-latest-available-upgrade-in-workbench) in Workbench. 1. Upgrade your .NET SDK to [v49.1.0-beta.1](https://github.com/stripe/stripe-dotnet/releases/tag/v49.1.0-beta.1) 1. Upgrade the API version used for [webhook endpoints](https://docs.stripe.com/webhooks/versioning.md). 1. [Test your integration](https://docs.stripe.com/testing.md) against the new version. 1. If you use Connect, [test your Connect integration](https://docs.stripe.com/connect/testing.md). 1. In Workbench, [perform the upgrade](https://docs.stripe.com/upgrades.md#perform-the-upgrade). You can [roll back the version](https://docs.stripe.com/upgrades.md#roll-back-your-api-version) for 72 hours. Learn more about [Stripe API upgrades](https://docs.stripe.com/upgrades.md). ## Related changes - [Adds pagination and updates fields for aggregrated Billing meter usage data](https://docs.stripe.com/changelog/clover/2025-09-30/update-meter-usage-fields.md) - [Adds the ability to update automatic tax, invoice creation, and invoice settings for Checkout Sessions](https://docs.stripe.com/changelog/clover/2025-09-30/checkout-sessions-tax-and-invoice-settings.md) - [Enables prebilling for subscriptions](https://docs.stripe.com/changelog/clover/2025-09-30/subscriptions-prebilling.md)