PayPal · Schema
Update Product Quantity in Subscription Response
The response to a request to update the quantity of the product or service in a subscription. You can also use this method to switch the plan and update the `shipping_amount` and `shipping_address` values for the subscription. This type of update requires the buyer's consent.
BillingCommerceDisputesInvoicesOrdersPaymentsPayoutsSubscriptionsTokensWebhooks