On my app I want to use managed pricing with a single plan required for every customer. On install the customer should be redirected directly into payment for that single plan without going through shopifys plan section page (because only on plan).
There is no option to require subscription to a plan in the apps shopify.yaml. Also I can not generate a payment url for managed pricing via appSubscriptionCreate in the admin api for managed pricing plans.
Is that correct or do I miss something?