Write_payment_settings access scope granted to custom app

Hi everyone,
I’m trying to create a custom app that can create a custom manual payment method for a store.
I found that the Admin API has this GraphQL mutation: customPaymentMethodCreate
but it requires the write_payment_settings access scope which I can’t grant to my App from the admin where I created it as it is not present in the configuration options.

What do I have to do to obtain this access scope? Is it only granted to Payment Apps reviewed by Shopify?

I have the same problem, have you solved it?

Sadly no, I checked back and found that the customPaymentMethodCreate mutation’s document page is a 404 now.

https://shopify.dev/api/admin-graphql/2022-04/mutations/customPaymentMethodCreate

and I can’t find anything on it in the release notes so I guess this way changed undocumented.