How to update the checkout using graphQL

[BalaSM]

I am trying to modify the checkout by using storefront API version 2023-10. My requirement is to update the checkout using graphQL , but when I gone through the documents, I couldn't find any graphQL functionalities for updating the checkout page, only checkoutCreate is available.

Is that the functionalities are removed or something? How can we achieve the aforesaid requirement.

Attached the document link that I have referred.

Link: https://shopify.dev/docs/api/storefront/2023-10/mutations/checkoutCreate

[Liam]

You should be able to use the Admin API to achieve this rather than the Storefront API - eg by using the cartLinesUpdate mutation, you can update the contents of a cart at checkout. Will this work for you?