What changed
No action needed unless you validate responses against a closed schema.
Affects portal_subscription_update reachable from 5 operations.
Who is affected
Code that reads Stripe's portal_subscription_update objects, used by 5 Stripe operations.
Before and after
| Where | Before | After |
|---|---|---|
| portal_subscription_update.billing_cycle_anchor | absent | present |
Based on Stripe’s published API specification. How severity is decided.