Subscriptions API adds invoice_settings description, footer, and custom_fields
Stripe API version 2026-06-24.dahlia adds description, footer, and custom_fields parameters to invoice_settings on subscription create/update, letting invoice content (PO numbers, contract references) be set at the subscription level instead of patching each generated invoice. Additive and non-breaking.
Action note
If you post-process subscription invoices to inject descriptions, footers, or custom fields, upgrade to 2026-06-24.dahlia and set them on invoice_settings at subscription level instead.