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## API Updates for December 19, 2024

**API**

* The newly released custom order level fees are now available for use across both checkout and orders. You can apply and manage the order level fee via the [v3 Management API for checkouts](/developer/api-reference/rest/admin/management/checkouts) and via the [v2 Management API for orders](/developer/api-reference/rest/admin/management/orders/order-fees). Additionally, you can fetch any applied fees through the [Storefront Checkout API](/developer/api-reference/rest/storefront/checkouts).

**Enhancements**

* Added new Stencil CLI options to [bundle](/developer/docs/storefront/stencil/cli/options-and-commands) and [push](/developer/docs/storefront/stencil/cli/options-and-commands) to allow for source map inclusion in theme builds and a new section on theme optimization and source maps. [Tools](/developer/docs/storefront/stencil/deployment/performance-optimization) that provide automatic error reporting, session playback, and optimization suggestions can rely on source maps for more readable insight.

* Added additional attributes that trigger a [product update](/developer/docs/integrations/webhooks/event-reference) webhook.

* Added a note to the Add to Cart URLs article to clarify that you need a product ID or SKU in the URL to add a coupon code.

**Bug Fixes**

* Corrected the `discount_rules` array of the [v2 Customer Groups](/developer/api-reference/rest/admin/management/customers/v2/customer-groups/get-customer-groups) endpoint.

* Updated the maximum characters for an email from 255 to 250 when creating a [custom account](/developer/api-reference/rest/admin/management/customers/v3/create-customers).

* Corrected the `option_values` array in the [Product Modifiers](/developer/api-reference/rest/admin/catalog/product-modifiers) endpoints.

**Developer Blog**

* [BigCommerce API Update: Order Level Fees at Checkout Now Available!](https://www.bigcommerce.com/blog/order-level-fees-available-at-checkout/)