post
https://api.loopsubscriptions.com/admin/2026-04/subscription//subscriptionPlan/update
This endpoint allows you to update the subscription plan for a subscription contract.
Rate limit - Global pool (i.e. 50 requests per second per domain)
Path param explained :
subscriptionIdId of the subscription. This can be passed in the following format :{id}- where id is the Loop internal id of the subscription contract. This is the default path param format.loop-{id}- where id is the Loop internal id of the subscription contract.shopify-${id}- Where id is the shopifySubscriptionId of the subscription contract.