Hi everyone!
When I try to retrieve quantityAvailable via Storefront API, I got this error.
Access denied for quantityAvailable field. Required access: `unauthenticated_read_product_inventory` access scope.
I know unauthenticated_read_product_inventory is not the access scope that extensions initially have.
Is there any way to add new access scope to checkout UI extension?
Hi there 
At this time this scope is unavailable for the Storefront API via Checkout UI extensions. I have brought this to the attention of the team. You can also create a Github Issue requesting this scope be added.
Got it. Thank you @lizk
Hi Lizk - any update on this? I would also like to be able to access this scope from Checkout UI extensions.
@lizk is there any update to this yet or are we still unable to access quantityAvailable in checkout UI extensions?
Edit: found the docs stating what scopes are available in UI extensions: https://shopify.dev/docs/api/checkout-ui-extensions/2024-04/configuration#api-access still seems weird not all of them are available. And the error message is just plain wrong then.
How do you figure out a scope is unavaliable for Checkout UI extensions? This is really confusing and I wasted a lot of time debugging this behaviour. Looking at the documention from my error messages (“Access denied for quantityAvailable field. Required access: unauthenticated_read_product_inventory access scope.”)) it seems like it should work if you add the access scope to the TOML file following https://shopify.dev/api/usage/access-scopes).
And why are there some scopes unavailable or the Storefront API via Checkout UI extensions???
@frede-1994 I opened an issue on github about this 7 months ago, maybe if you added a comment there it might help bump it up in priority: