New preferences fields for prefilling checkout in the Storefront (cart) API

As of 2024-04, you can use the preferences object in the Cart API to prefill a checkout session.

These changes help merchants streamline their checkout process for their customers by prefilling information such as the preferred delivery method and pickup location. This change is additive to the 2024-04 version.

Learn more about these new fields in the cartCreate reference page and the CartBuyerIdentity reference page

For more information, an updated tutorial is also available.