ClickFunnels Products::Prices::Change Option API
> Allowed variant/price upgrade and downgrade targets for a source price. Merchant-configured rows define which variant + price combinations a subscription using a given source price may switch to. The discovery endpoint returns these grouped by target variant; each group lists the prices on that target variant the subscription may move to. Use the returned `products_price_id`s as the body's `products_price_id` on `POST /orders/line_items/:line_item_id/changes` (preview) or `POST /orders/line_items/:line_item_id/changes/perform` (commit). See [Step 1 - Discover what's allowed](https://accounts.myclickfunnels.com/.well-known/subscription-changes/skill.md#step-1---discover-whats-allowed) in the [Subscription Changes Skill](https://accounts.myclickfunnels.com/.well-known/subscription-changes/skill.md).